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Python_script_functionalities.txt

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+Functionalities
+The script provides the following functionalities:
+
+Multiple search modes:
+-canonical: Search by the canonical key
+-normalised: Search by the normalized form with length marks
+-headword: Search across all dictionary headwords
+
+Filtering options:
+-By part of speech
+-By dictionary source
+-Exact or substring matching
+
+Similarity search:
+-sound: Find entries with Ellis vocalic variations
+-edit: Find entries with similar spelling
+-prefix: Find entries that start with a given prefix
+
+Statistics and analysis:
+-Get counts of entries by dictionary
+-See distribution of parts of speech
+-Examine match types

alignment_log.txt

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+======================================================================
+CROSS-DICTIONARY ALIGNMENT — v2 (canonical-key)
+Generated: 2026-04-06T12:15:31.719416
+======================================================================
+
+[1] LOADING DATA...
+  BT:  36103 entries
+  CH:  36700 entries
+  Sw:  25922 entries
+  DOE: 15907 entries
+  PC:  33922 lemmas
+  BT norm:  9471 unique mappings
+  CH norm:  36689 unique mappings
+  Sw norm:  25595 unique mappings
+  DOE norm: 15474 unique mappings
+
+[2] BUILDING CANONICAL-KEY INDICES...
+  BT  canonical keys: 34144
+  CH  canonical keys: 35755
+  Sw  canonical keys: 24659 (excluded 2437 cross-refs)
+  DOE canonical keys: 15008
+  PC  canonical keys: 33640
+  Union of canonical keys: 63374
+
+[3] PHASE 1: EXACT CANONICAL-KEY MATCHING...
+  Multi-source matches: 35592
+  Single-source:        27782
+
+[4] PHASE 2: ELLIS VOCALIC MATCHING...
+  Ellis matches: 3467
+
+[5] EXPANDING TO ALIGNMENT ROWS...
+  Total alignment rows: 92391
+
+[6] COMPUTING STATISTICS...
+
+  OVERALL:
+  Unique canonical keys: 63374
+  Alignment rows: 92391
+
+  MATCH TYPES:
+    ellis_vocalic       :   3467 (  5.5%)
+    exact               :  35592 ( 56.2%)
+    single              :  24315 ( 38.4%)
+
+  SOURCE COVERAGE:
+    1 source(s):  24315 ( 38.4%)
+    2 source(s):  13188 ( 20.8%)
+    3 source(s):   8818 ( 13.9%)
+    4 source(s):  11600 ( 18.3%)
+    5 source(s):   5453 (  8.6%)
+
+  PER-LETTER COVERAGE:
+  Let     Total      BT      CH      Sw     DOE      PC
+  -----------------------------------------------
+  _other     139      14       0     116       8       1
+  a        3466    2020    1947    1215    1484    1797
+  b        4724    2823    2673    1708    1994    2414
+  c        2812    1571    1542    1019    1248    1465
+  d        1603     941     917     598     728     866
+  e        2762    1507    1446     933    1364    1467
+  f        5677    3156    3146    2062    2762    3135
+  g        7458    4611    2967    2394    2685    3068
+  h        4886    2500    3126    2317    2558    3035
+  i        1048     458     525     441     401     531
+  k           8       1       0       0       3       5
+  l        1824    1073    1258     837       0    1245
+  m        2371    1314    1565    1207       0    1541
+  n        1207     620     784     598       0     721
+  o        2207    1166    1500    1005      21    1495
+  p         575     306     351     268       0     414
+  q           2       0       1       0       0       1
+  r        1112     627     731     544       0     703
+  s        6063    3501    4137    3000       0    3687
+  t        2098    1178    1411     980       0    1275
+  u        3046    1710    2016    1458       0    2018
+  v           7       0       0       0       0       7
+  w        4656    2558    3065    2138       0    2755
+  y         481     247     363     214       1     296
+  z           4       0       0       0       0       4
+  æ        1512     723     845     509     583     784
+  ð        1620     888    1177     753       0     914
+  ø           3       0       0       0       0       3
+  đ           3       0       0       0       0       3
+
+  PAIRWISE OVERLAP (canonical keys):
+     BT ∩ CH :  20419  Jaccard=0.413  BT→CH=0.598  CH→BT=0.571
+     BT ∩ Sw :  16158  Jaccard=0.379  BT→Sw=0.473  Sw→BT=0.655
+     BT ∩ DOE:   7847  Jaccard=0.190  BT→DOE=0.230  DOE→BT=0.523
+     BT ∩ PC :  18875  Jaccard=0.386  BT→PC=0.553  PC→BT=0.561
+     CH ∩ Sw :  18232  Jaccard=0.432  CH→Sw=0.510  Sw→CH=0.739
+     CH ∩ DOE:   9257  Jaccard=0.223  CH→DOE=0.259  DOE→CH=0.617
+     CH ∩ PC :  24411  Jaccard=0.543  CH→PC=0.683  PC→CH=0.726
+     Sw ∩ DOE:   7383  Jaccard=0.229  Sw→DOE=0.299  DOE→Sw=0.492
+     Sw ∩ PC :  17113  Jaccard=0.416  Sw→PC=0.694  PC→Sw=0.509
+    DOE ∩ PC :   9947  Jaccard=0.257  DOE→PC=0.663  PC→DOE=0.296
+
+  POS CONSISTENCY (multi-source entries):
+    Agreement:     31852 (85.6%)
+    Disagreement:   5337 (14.4%)
+    (No POS info on either side excluded)
+
+======================================================================
+ALIGNMENT LOGIC SUMMARY
+======================================================================
+
+
+1. DATA SOURCES
+   - Bosworth-Toller (BT): 3 columns (headword, POS, definition). Uses acute
+     accents (á, é, í, ó, ú) and hyphens in compounds (a-bacan). 36,103 entries.
+   - Clark Hall (CH): 2 columns (headword, definition with embedded POS).
+     Uses macrons (ā, ē, ī, ō, ū). 36,700 entries. ± prefix indicates optional
+     ge- prefix on verbs (1,068 entries).
+   - Sweet: 2 columns in REVERSED order (definition, headword). Uses pipe |
+     as morpheme boundary. 25,922 entries. About 2,400 entries are cross-
+     references mapping to synonyms rather than format normalisations.
+   - DOE (Dictionary of Old English): 6 columns. Covers only letters A–I.
+     15,907 entries. Most detailed POS info with verb class and declension.
+   - ParCorOE master lemma list: 2 columns (lemma, POS). 33,922 entries.
+     Uses macrons and ð (not þ).
+
+2. NORMALISATION STRATEGY (THREE-LAYER)
+
+   Layer 1 — Dictionary-specific normalisation tables:
+     Each dictionary has a normalisation table that maps its headword spellings
+     to a normalised form. This handles format conventions: hyphens, accent
+     marks (BT acute → macron), pipe separators, middle dots.
+     Coverage: BT 9,471/36,103 (26%), CH 100%, Sweet 99%, DOE 97%.
+
+   Layer 2 — Canonical key harmonisation:
+     The normalised forms from Layer 1 are NOT cross-dictionary consistent:
+     BT normalises 'a-bacan' → 'abacan' (no macron on prefix ā-)
+     CH normalises 'ābacan' → 'ābacan' (keeps macron)
+     ParCorOE has 'ābacan' (with macron)
+     To bridge this, we compute a CANONICAL KEY that strips all length marks
+     (macrons, acutes) from vowels and unifies þ→ð:
+       BT 'abacan' → key 'abacan'
+       CH 'ābacan' → key 'abacan'
+       PC 'ābacan' → key 'abacan'  → MATCH!
+     Also handles: ± prefix stripping, (ge) suffix stripping, case folding.
+
+   Layer 3 — Ellis vocalic correspondences:
+     For entries still unmatched after Layer 2, systematic sound-spelling
+     correspondences from Ellis are applied:
+       ie ↔ y (Sweet ie → Late WS y): fierd/fyrd, hiene/hine
+       ie ↔ i: diere/dyre
+       io ↔ eo (EWS io → LWS eo): bion/beon, biorht/beorht
+       on ↔ an (o→a before nasals): monig/manig, monn/mann
+       om ↔ am: similarly before labial nasals
+       rg ↔ rh: burg/burh, sorg/sorh
+       ea ↔ a: breaking variants
+       eo ↔ e: before labials
+     These are applied to canonical keys to find fuzzy matches.
+
+3. ALIGNMENT PROCEDURE
+   - For each dictionary entry, apply Layer 1 (normalisation table) to get the
+     normalised form, falling back to format-stripping if no table entry exists.
+   - Compute the canonical key (Layer 2) for each normalised form.
+   - Group all entries by canonical key across all dictionaries.
+   - Phase 1 (Exact): If 2+ dictionaries share the same canonical key, align them.
+   - Phase 2 (Ellis): For single-source keys, generate Ellis variants and try
+     to match them with existing keys from other dictionaries.
+   - Phase 3 (Disambiguation): Within each canonical key group, sub-group by POS.
+     If multiple POS categories exist, add glosses for disambiguation.
+
+4. SWEET CROSS-REFERENCE HANDLING
+   Sweet's normalisation table sometimes maps headwords to completely different
+   words (synonyms/see-also). These are detected by comparing the canonical keys
+   of the original headword and normalised form; if they differ by >50% of
+   characters and the difference is not a known prefix, the normalised form is
+   rejected and the headword's own stripped form is used instead.
+
+5. HOMOGRAPH DISAMBIGUATION
+   When the same canonical key maps to entries with different POS tags, separate
+   alignment rows are created for each POS group, with gloss information added
+   for disambiguation. Example: 'god' → Adj ('good') vs N ('God/god').
+

alignment_metrics.txt

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+ALIGNMENT QUALITY METRICS
+======================================================================
+
+Total alignment rows: 92391
+
+ROWS BY NUMBER OF SOURCES:
+  1 source(s):  54339 (58.8%)
+  2 source(s):  20871 (22.6%)
+  3 source(s):   8705 (9.4%)
+  4 source(s):   6146 (6.7%)
+  5 source(s):   2330 (2.5%)
+
+  Rows with 2+ sources: 38052 (41.2%)
+
+PER-DICTIONARY ROW COUNTS:
+  BT_headword: 38397
+  CH_headword: 39228
+  Sweet_headword: 27808
+  DOE_headword: 16980
+  ParCorOE: 36017
+
+MATCH TYPE DISTRIBUTION (rows):
+  ellis_vocalic: 7765 (8.4%)
+  exact: 59920 (64.9%)
+  single: 24706 (26.7%)
+
+
+PER-LETTER ALIGNMENT DETAIL
+======================================================================
+
+Let      Rows      BT      CH      Sw     DOE      PC
+-----------------------------------------------
+_other     139      14       0     116       8       1
+a        5187    2198    2017    1262    1570    1819
+b        6933    3111    2799    1804    2141    2435
+c        3923    1681    1599    1060    1304    1476
+d        2367    1010     952     616     775     871
+e        4036    1650    1500     978    1441    1481
+f        8324    3440    3271    2145    2959    3153
+g       10613    5023    3088    2494    2945    3098
+h        7225    2710    3302    2453    2771    3070
+i        1467     495     541     461     425     532
+k           9       1       0       0       3       5
+l        2679    1207    1335     910       0    1261
+m        3307    1407    1625    1260       0    1556
+n        1826     680     831     666       0     734
+o        3163    1225    1560    1050      25    1509
+p         759     316     359     275       0     416
+q           2       0       1       0       0       1
+r        1606     679     771     580       0     713
+s        8896    3775    4373    3191       0    3734
+t        3059    1257    1504    1035       0    1291
+u        4910    1779    2047    1540       0    2027
+v           7       0       0       0       0       7
+w        6669    2756    3257    2354       0    2795
+y         709     259     387     226       2     299
+z           4       0       0       0       0       4
+æ        2137     785     867     530     611     792
+ð        2429     939    1242     802       0     931
+ø           3       0       0       0       0       3
+đ           3       0       0       0       0       3
+
+
+DOE COVERAGE ANALYSIS (letters A-I only)
+======================================================================
+  a: 1570/5187 rows have DOE entry (30.3% if total > 0)
+  b: 2141/6933 rows have DOE entry (30.9% if total > 0)
+  c: 1304/3923 rows have DOE entry (33.2% if total > 0)
+  d: 775/2367 rows have DOE entry (32.7% if total > 0)
+  e: 1441/4036 rows have DOE entry (35.7% if total > 0)
+  f: 2959/8324 rows have DOE entry (35.5% if total > 0)
+  g: 2945/10613 rows have DOE entry (27.7% if total > 0)
+  h: 2771/7225 rows have DOE entry (38.4% if total > 0)
+  i: 425/1467 rows have DOE entry (29.0% if total > 0)
+
+
+POS DISTRIBUTION (across all rows)
+======================================================================
+  N              :  30651 (33.2%)
+  (empty)        :  29627 (32.1%)
+  V              :  16373 (17.7%)
+  Adj            :   9918 (10.7%)
+  Adv            :   2167 (2.3%)
+  Name           :   2102 (2.3%)
+  Part           :    480 (0.5%)
+  grammatical categories:    323 (0.3%)
+  bound form     :    284 (0.3%)
+  Prep           :    185 (0.2%)
+  participle     :     64 (0.1%)
+  Pron           :     58 (0.1%)
+  Conj           :     54 (0.1%)
+  Num            :     46 (0.0%)
+  Interj         :     42 (0.0%)
+  letter of the alphabet:      4 (0.0%)
+  fw (foreign word):      3 (0.0%)
+  fw (foreing word):      3 (0.0%)
+  letter         :      2 (0.0%)
+  Prefix         :      1 (0.0%)
+  ? part         :      1 (0.0%)
+  of uncertain classification:      1 (0.0%)
+  past. part. of (ge)fǣlsian:      1 (0.0%)
+  past past. of indrencan / *ge·indrencan:      1 (0.0%)
+
+
+QUALITY ASSESSMENT SUMMARY
+======================================================================
+
+Overall alignment rate (2+ sources): 41.2%
+
+Interpretation:
+  - 5-source rows (all dicts): Best possible alignment with full cross-validation.
+    These are high-confidence entries present in all resources.
+  - 4-source rows: Very good alignment. Missing source is usually DOE (only A-I)
+    or ParCorOE (corpus-dependent vocabulary).
+  - 3-source rows: Good alignment. Typical for words present in major dicts
+    but absent from specialised resources.
+  - 2-source rows: Acceptable alignment. Often one general + one specialised dict.
+  - 1-source rows: Unaligned. Categories include:
+    (a) Proper names unique to one dictionary
+    (b) Very rare or hapax legomena
+    (c) Dictionary-specific formatting entries (prefixes, cross-references)
+    (d) Words with spelling so divergent that canonical key doesn't match
+    (e) DOE entries J-Z that don't exist in DOE (empty DOE for those letters)
+
+Note: DOE only covers letters A-I. For letters L-Z, maximum possible sources
+is 4 (BT + CH + Sweet + ParCorOE). This systematically reduces the 5-source
+count and inflates the single-source count.
+  Letters A-I (DOE range): 50075 rows, 20121 multi-source (40.2%)
+  Letters J-Z (no DOE):    42316 rows, 17785 multi-source (42.0%)

alignment_typology.txt

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+TYPOLOGY OF ALIGNMENT EXAMPLES
+======================================================================
+
+Type: BT [ellis_vocalic]
+--------------------------------------------------
+  Key: abeogan  →  Norm: ābēogan
+    BT_headword: a-began
+    POS: V
+    Gloss: Weorþe heora bæc swylce abéged eác dorsum illorum semper incurva
+
+  Key: adred  →  Norm: Ēadred
+    BT_headword: a-dréd
+    POS: V
+    Gloss: a-dréd feared
+
+  Key: adriogan  →  Norm: ādrēogan
+    BT_headword: a-dreógan
+    POS: V
+
+
+Type: BT [exact]
+--------------------------------------------------
+  Key: a  →  Norm: ā
+    BT_headword: á
+    POS: N
+    Gloss: Dryhtnes á the Lord's law
+
+  Key: a  →  Norm: ā
+    BT_headword: á
+    POS: N
+    Gloss: Á ðe
+
+  Key: a  →  Norm: ā
+    BT_headword: á
+    POS: N
+    Gloss: á ðý ever the
+
+
+Type: BT [single]
+--------------------------------------------------
+  Key: ()red  →  Norm: ()rēd()
+    BT_headword: (-)réd(-)
+
+  Key: [motan  →  Norm: [mōtan
+    BT_headword: [mótan
+
+  Key: [norð]  →  Norm: [norþ]
+    BT_headword: [norþ]
+    POS: Adj
+
+
+Type: BT+CH [ellis_vocalic]
+--------------------------------------------------
+  Key: allswa  →  Norm: eallswā
+    BT_headword: all-swá
+    CH_headword: eallswā
+    Gloss: just as
+
+  Key: alo  →  Norm: alo-
+    BT_headword: ealo
+    CH_headword: alo-
+    Gloss: = ealu-
+
+  Key: anhyldan  →  Norm: onhyldan
+    BT_headword: on-hyldan
+    CH_headword: onhyldan
+    Gloss: = onhieldan
+
+
+Type: BT+CH [exact]
+--------------------------------------------------
+  Key: a  →  Norm: ā
+    BT_headword: a
+    CH_headword: a
+    POS: Prep
+    Gloss: = on] on
+
+  Key: abbud  →  Norm: abbud
+    BT_headword: abbud
+    CH_headword: abbud
+    POS: N
+
+  Key: abbuddom  →  Norm: abbuddōm
+    BT_headword: abbud-dóm
+    CH_headword: abbuddōm
+    POS: N
+
+
+Type: BT+CH+DOE [ellis_vocalic]
+--------------------------------------------------
+  Key: blio  →  Norm: blēo(ge)
+    BT_headword: blió
+    CH_headword: ±blēo
+    DOE_headword: blēo
+    POS: N
+    Gloss: gs. blēos
+
+  Key: brytenwalda  →  Norm: Brytenwealda
+    BT_headword: brýten-walda
+    CH_headword: Brytenwealda
+    DOE_headword: bryten-wealda
+    POS: N
+    Gloss: wielder of Britain
+
+  Key: diepan  →  Norm: dȳpan
+    BT_headword: dýpan
+    CH_headword: dȳpan
+    DOE_headword: dȳpan
+    POS: V
+    Gloss: to ‘dip’: baptize
+
+
+Type: BT+CH+DOE [exact]
+--------------------------------------------------
+  Key: aeargian  →  Norm: āeargian
+    BT_headword: a-eargian
+    CH_headword: āeargian
+    DOE_headword: a-eargian
+    POS: V
+    Gloss: to become remiss
+
+  Key: afæstla  →  Norm: āfæstlā (INT)
+    BT_headword: afæstla
+    CH_headword: āfæstla
+    DOE_headword: āfæstlā
+    POS: Interj
+    Gloss: interj. certainly! assuredly! Æ.
+
+  Key: agendfrea  →  Norm: āgendfrēa
+    BT_headword: ágend-freá
+    CH_headword: āgendfrēa
+    DOE_headword: āgend-frēa
+    POS: N
+    Gloss: lord
+
+
+Type: BT+CH+DOE+ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: abrietan  →  Norm: ābrȳtan
+    BT_headword: a-brytan
+    CH_headword: ābrȳtan
+    DOE_headword: a-brȳtan
+    ParCorOE: ābrȳtan
+    POS: V
+    Gloss: to destroy
+
+  Key: ahieltan  →  Norm: āhyltan
+    BT_headword: a-hyltan
+    CH_headword: āhyltan
+    DOE_headword: a-hyltan
+    ParCorOE: āhyltan
+    POS: V
+    Gloss: to trip up
+
+  Key: aldorbealu  →  Norm: ealdorbealu
+    BT_headword: aldor-bealu
+    CH_headword: ealdorbealu
+    DOE_headword: ealdor-bealu
+    ParCorOE: ealdorbealu
+    POS: N
+
+
+Type: BT+CH+DOE+ParCorOE [exact]
+--------------------------------------------------
+  Key: abacan  →  Norm: ābacan
+    BT_headword: a-bacan
+    CH_headword: ābacan
+    DOE_headword: a-bacan
+    ParCorOE: ābacan
+    POS: V
+
+  Key: ablacian  →  Norm: āblācian
+    BT_headword: a-blácian
+    CH_headword: āblācian
+    DOE_headword: a-blācian
+    ParCorOE: āblācian
+    POS: V
+    Gloss: to become pale
+
+  Key: ablæcan  →  Norm: āblǣcan
+    BT_headword: a-blǽcan
+    CH_headword: āblǣcan
+    DOE_headword: a-blǣcan
+    ParCorOE: āblǣcan
+    POS: V
+    Gloss: to bleach
+
+
+Type: BT+CH+DOE+ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: acon  →  Norm: Acon
+    BT_headword: ACAN
+    CH_headword: acan
+    Sweet_headword: acan
+    DOE_headword: acan
+    ParCorOE: acan
+    POS: V
+    Gloss: to ‘ache
+
+  Key: adriogan  →  Norm: ādrēogan
+    BT_headword: a-driógan
+    CH_headword: ādrēogan
+    Sweet_headword: ā-drēog|an
+    DOE_headword: a-drēogan
+    ParCorOE: ādrēogan
+    POS: V
+
+  Key: afehtan  →  Norm: āfeohtan
+    BT_headword: a-feohtan
+    CH_headword: āfeohtan
+    Sweet_headword: ā-feohtan
+    DOE_headword: a-feohtan
+    ParCorOE: āfeohtan
+    POS: V
+    Gloss: to fight
+
+
+Type: BT+CH+DOE+ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: abannan  →  Norm: ābannan
+    BT_headword: a-bannan
+    CH_headword: ābannan
+    Sweet_headword: ā-bannan
+    DOE_headword: a-bannan
+    ParCorOE: ābannan
+    POS: V
+
+  Key: abeatan  →  Norm: ābēatan
+    BT_headword: a-beátan
+    CH_headword: ābēatan
+    Sweet_headword: ā-bēatan
+    DOE_headword: a-bēatan
+    ParCorOE: ābēatan
+    POS: V
+
+  Key: abelgan  →  Norm: ābelgan
+    BT_headword: a-belgan
+    CH_headword: ābelgan
+    Sweet_headword: ā-belgan
+    DOE_headword: a-belgan
+    ParCorOE: ābelgan
+    POS: V
+
+
+Type: BT+CH+DOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: aldor  →  Norm: ealdor
+    BT_headword: aldor
+    CH_headword: ealdor
+    Sweet_headword: ealdor
+    DOE_headword: ealdor
+    POS: N
+    Gloss: I. m. elder
+
+  Key: besion  →  Norm: besēon
+    BT_headword: be-sión
+    CH_headword: besēon
+    Sweet_headword: be-sēon
+    DOE_headword: be-sēon
+    POS: V
+
+  Key: biercholt  →  Norm: byrcholt
+    BT_headword: byrc-holt
+    CH_headword: byrcholt
+    Sweet_headword: bierc-holt
+    DOE_headword: byrc-holt
+    POS: N
+
+
+Type: BT+CH+DOE+Sweet [exact]
+--------------------------------------------------
+  Key: abysgung  →  Norm: ābysgung
+    BT_headword: a-bysgung
+    CH_headword: ābysgung
+    Sweet_headword: ā-bysg-ung
+    DOE_headword: a-bysgung
+    POS: N
+
+  Key: ampre  →  Norm: ampre
+    BT_headword: ampre
+    CH_headword: ampre
+    Sweet_headword: ampre
+    DOE_headword: ampre
+    POS: N
+
+  Key: antecrist  →  Norm: Antecrist
+    BT_headword: Antecrist
+    CH_headword: Antecrist
+    Sweet_headword: Ante-crīst
+    DOE_headword: ante-crist
+    POS: N
+
+
+Type: BT+CH+ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: abernan  →  Norm: ābeornan
+    BT_headword: a-beornan
+    CH_headword: ābeornan
+    ParCorOE: ābeornan
+    POS: V
+    Gloss: to take fire
+
+  Key: aferscean  →  Norm: āferscan
+    BT_headword: a-ferscean
+    CH_headword: āferscan
+    ParCorOE: āferscan
+    POS: V
+
+  Key: agenyrnan  →  Norm: āgēniernan
+    BT_headword: agén-yrnan
+    CH_headword: āgēniernan
+    ParCorOE: āgēniernan
+    POS: V
+
+
+Type: BT+CH+ParCorOE [exact]
+--------------------------------------------------
+  Key: abeornan  →  Norm: ābeornan
+    BT_headword: a-beornan
+    CH_headword: ābeornan
+    ParCorOE: ābeornan
+    POS: V
+
+  Key: ablindan  →  Norm: āblindan
+    BT_headword: a-blindan
+    CH_headword: āblindan
+    ParCorOE: āblindan
+    POS: V
+
+  Key: acleopian  →  Norm: ācleopian
+    BT_headword: a-cleopian
+    CH_headword: ācleopian
+    ParCorOE: ācleopian
+    POS: V
+
+
+Type: BT+CH+ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: agielpan  →  Norm: agilpan
+    BT_headword: a-gilpan
+    CH_headword: āgilpan
+    Sweet_headword: ā-giėlpan
+    ParCorOE: agilpan
+    POS: V
+
+  Key: agyldan  →  Norm: āgieldan
+    BT_headword: a-gyldan
+    CH_headword: āgieldan
+    Sweet_headword: ā-giėldan
+    ParCorOE: āgieldan
+    POS: V
+
+  Key: alon  →  Norm: Alon
+    BT_headword: alan
+    CH_headword: alan
+    Sweet_headword: alan
+    ParCorOE: alan
+    POS: V
+    Gloss: to nourish
+
+
+Type: BT+CH+ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: abeodan  →  Norm: ābēodan
+    BT_headword: a-beódan
+    CH_headword: ābēodan
+    Sweet_headword: ā-bēodan
+    ParCorOE: ābēodan
+    POS: V
+
+  Key: abidan  →  Norm: ābīdan
+    BT_headword: a-bídan
+    CH_headword: ābīdan
+    Sweet_headword: ā-bīd|an
+    ParCorOE: ābīdan
+    POS: V
+
+  Key: ablæcnes  →  Norm: āblǣcnes
+    BT_headword: a-blǽcnes
+    CH_headword: āblǣcnes
+    Sweet_headword: ā-blǣc-nes
+    ParCorOE: āblǣcnes
+    POS: N
+
+
+Type: BT+CH+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: aldorleas  →  Norm: ealdorlēas
+    BT_headword: aldor-leás
+    CH_headword: ealdorlēas
+    Sweet_headword: ealdor-lēas
+    Gloss: lifeless
+
+  Key: allic  →  Norm: eallic
+    BT_headword: eal-líc
+    CH_headword: eallic
+    Sweet_headword: eallic
+    Gloss: universal
+
+  Key: arsceamu  →  Norm: ārscamu
+    BT_headword: ár-sceamu
+    CH_headword: ārscamu
+    Sweet_headword: ār-scamu
+    POS: N
+
+
+Type: BT+CH+Sweet [exact]
+--------------------------------------------------
+  Key: a  →  Norm: ā
+    BT_headword: Á
+    CH_headword: ā
+    Sweet_headword: ā
+    POS: Adv
+    Gloss: adv. always
+
+  Key: a  →  Norm: ā
+    BT_headword: A
+    CH_headword: ā-
+    Sweet_headword: a-
+    Gloss: Ic todæg cende [cende Surt
+
+  Key: acen  →  Norm: ācen
+    BT_headword: ácen
+    CH_headword: ācen
+    Sweet_headword: ācen
+    Gloss: = ǣcen
+
+
+Type: BT+DOE [ellis_vocalic]
+--------------------------------------------------
+  Key: afiellan  →  Norm: āfyllan
+    BT_headword: a-fyllan
+    DOE_headword: a-fyllan
+    POS: V
+    Gloss: Gif mon afelle [MS
+
+  Key: agon  →  Norm: āgan
+    BT_headword: ágan
+    DOE_headword: āga
+    POS: N
+    Gloss: ágan
+
+  Key: agon  →  Norm: āgan
+    BT_headword: a-gán
+    DOE_headword: a-gān
+    POS: V
+    Gloss: Ǽr his tíd agá [tíde ge MS
+
+
+Type: BT+DOE [exact]
+--------------------------------------------------
+  Key: abicgan  →  Norm: ābicgan
+    BT_headword: a-bicgan
+    DOE_headword: a-bicgan
+    POS: V
+    Gloss: Gif fríman wið fríes mannes wlf geligeþ
+
+  Key: abiterian  →  Norm: abiterian
+    BT_headword: a-biterian
+    DOE_headword: a-biterian
+    POS: V
+    Gloss: a-biterian
+
+  Key: ablotan  →  Norm: ablōtan
+    BT_headword: a-blótan
+    DOE_headword: a-blōtan
+    POS: V
+
+
+Type: BT+DOE+ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: abielgan  →  Norm: ābylgan
+    BT_headword: a-bylgan
+    DOE_headword: a-bylgan
+    ParCorOE: ābylgan
+    POS: V
+    Gloss: HI hine oft abylgdon [MS
+
+  Key: abiewan  →  Norm: ābȳwan
+    BT_headword: a-bywan
+    DOE_headword: a-bȳwan
+    ParCorOE: ābȳwan
+    POS: V
+    Gloss: Beóþ monna gǽstas beorhte abýwde þurh bryne fýres the souls of men are brightly 
+
+  Key: aciegan  →  Norm: ācīgan
+    BT_headword: á-cígan
+    DOE_headword: a-cīgan
+    ParCorOE: ācīgan
+    POS: V
+    Gloss: Acígde of corþre cyninges þegnas he called the thanes of the king from the band
+
+
+Type: BT+DOE+ParCorOE [exact]
+--------------------------------------------------
+  Key: abarian  →  Norm: ābarian
+    BT_headword: a-barian
+    DOE_headword: a-barian
+    ParCorOE: ābarian
+    POS: V
+    Gloss: Gif ðú abarast úre sprǽce si sermonem nostrum profers in medium
+
+  Key: aberendlic  →  Norm: āberendlic
+    BT_headword: a-berend-líc
+    DOE_headword: a-berendlic
+    ParCorOE: āberendlic
+    POS: Adj
+    Gloss: Aberendlíc broc bearable affliction
+
+  Key: ablawung  →  Norm: ablāwung
+    BT_headword: a-blawung
+    DOE_headword: a-blāwung
+    ParCorOE: ablāwung
+    POS: N
+
+
+Type: BT+DOE+ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: arnian  →  Norm: earnian(ge)
+    BT_headword: EARNIAN
+    Sweet_headword: earn|ian
+    DOE_headword: earnian
+    ParCorOE: earnian(ge)
+    POS: V
+    Gloss: Byþ geseald ðære þeóde ðe hys earnaþ it shall be given to the nation which deser
+
+  Key: beron  →  Norm: beran(ge)
+    BT_headword: béron
+    Sweet_headword: beran
+    DOE_headword: beran
+    ParCorOE: beran(ge)
+    POS: V
+    Gloss: carry
+
+  Key: biemesangere  →  Norm: bȳmesangere
+    BT_headword: býme-sangere
+    Sweet_headword: bīem-esangere
+    DOE_headword: bȳme-sangere
+    ParCorOE: bȳmesangere
+    POS: N
+
+
+Type: BT+DOE+ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: abbod  →  Norm: abbod
+    BT_headword: abbod
+    Sweet_headword: abbod
+    DOE_headword: abbod
+    ParCorOE: abbod
+    POS: N
+
+  Key: abbodrice  →  Norm: abbodrīce
+    BT_headword: abbod-ríce
+    Sweet_headword: abbod-rīce
+    DOE_headword: abbod-rīce
+    ParCorOE: abbodrīce
+    POS: N
+
+  Key: acelan  →  Norm: ācēlan
+    BT_headword: a-célan
+    Sweet_headword: ā-cēlan
+    DOE_headword: a-cēlan
+    ParCorOE: ācēlan
+    POS: V
+    Gloss: cool
+
+
+Type: BT+DOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: afiellan  →  Norm: āfyllan
+    BT_headword: a-fyllan
+    Sweet_headword: ā-fyllan
+    DOE_headword: a-fyllan
+    POS: V
+    Gloss: and g. or i. fill
+
+  Key: bitel  →  Norm: bȳtel
+    BT_headword: bítel
+    Sweet_headword: bīetel
+    DOE_headword: bȳtel
+    POS: N
+    Gloss: mallet [bēatan].
+
+  Key: borggielda  →  Norm: borggylda
+    BT_headword: borg-gylda
+    Sweet_headword: borg-giėlda
+    DOE_headword: borg-gylda
+    POS: N
+
+
+Type: BT+DOE+Sweet [exact]
+--------------------------------------------------
+  Key: afyllan  →  Norm: āfyllan
+    BT_headword: a-fyllan
+    Sweet_headword: ā-fyllan
+    DOE_headword: a-fyllan
+    POS: V
+    Gloss: and g. or i. fill
+
+  Key: angelcyning  →  Norm: Angelcyning
+    BT_headword: Angel-cyning
+    Sweet_headword: Angel-cyning
+    DOE_headword: angel-cyning
+    POS: N
+    Gloss: king of the English.
+
+  Key: antimber  →  Norm: antimber
+    BT_headword: an-timber
+    Sweet_headword: an-timber
+    DOE_headword: an-timber
+    POS: N
+
+
+Type: BT+ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: abiegendlic  →  Norm: ābȳgendlic
+    BT_headword: a-býgendlíc
+    ParCorOE: ābȳgendlic
+    POS: Adj
+    Gloss: a-býgendlíc
+
+  Key: adred  →  Norm: Ēadred
+    BT_headword: Eádréd
+    ParCorOE: Ēadred
+    POS: Name
+    Gloss: Hér
+
+  Key: afirran  →  Norm: āfierran
+    BT_headword: a-firran
+    ParCorOE: āfierran
+    POS: V
+    Gloss: Ðæt he him afirre frécne geþohtas that he put away from him wicked thoughts
+
+
+Type: BT+ParCorOE [exact]
+--------------------------------------------------
+  Key: abehofian  →  Norm: ābehōfian
+    BT_headword: a-behófian
+    ParCorOE: ābehōfian
+    POS: V
+
+  Key: aberd  →  Norm: āberd
+    BT_headword: a-berd
+    ParCorOE: āberd
+    POS: Adj
+    Gloss: a-berd
+
+  Key: ablend  →  Norm: ablend
+    BT_headword: a-blend
+    ParCorOE: ablend
+    POS: Adj
+
+
+Type: BT+ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: anhyrian  →  Norm: onhyrian
+    BT_headword: an-hyrian
+    Sweet_headword: on-hyr|ian
+    ParCorOE: onhyrian
+    POS: V
+    Gloss: Ne anhyre ðú noli æmulari
+
+  Key: blæcteoru  →  Norm: blæcteru
+    BT_headword: blæc-teru
+    Sweet_headword: blæc-te(o)ru
+    ParCorOE: blæcteru
+    POS: N
+
+  Key: cealwa  →  Norm: calwa
+    BT_headword: calwa
+    Sweet_headword: calwa
+    ParCorOE: calwa
+    POS: N
+    Gloss: mange [calo].
+
+
+Type: BT+ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: agenspræc  →  Norm: āgenspræc
+    BT_headword: ágen-spræc
+    Sweet_headword: āgen-spræ̂c
+    ParCorOE: āgenspræc
+    POS: N
+
+  Key: angeltwicce  →  Norm: angeltwicce
+    BT_headword: angel-twicce
+    Sweet_headword: angel-twicce
+    ParCorOE: angeltwicce
+    POS: N
+    Gloss: ?) earthworm.
+
+  Key: beðian  →  Norm: beðian(ge)
+    BT_headword: beðian
+    Sweet_headword: bęþ|ian
+    ParCorOE: beðian(ge)
+    POS: V
+    Gloss: bathe
+
+
+Type: BT+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: acyrrednes  →  Norm: ācirrednes
+    BT_headword: a-cyrrednes
+    Sweet_headword: ā-cięrr-ednes
+    POS: N
+    Gloss: turning away
+
+  Key: aldorfrea  →  Norm: ealdorfrēa
+    BT_headword: ealdor-freá
+    Sweet_headword: ealdor-frēa
+    Gloss: † m. chief lord.
+
+  Key: aldorlic  →  Norm: ealdorlic
+    BT_headword: aldor-líc
+    Sweet_headword: ealdor-lic
+    Gloss: princely
+
+
+Type: BT+Sweet [exact]
+--------------------------------------------------
+  Key: agieta  →  Norm: āgīeta
+    BT_headword: a-giéta
+    Sweet_headword: ā-giėta
+    POS: N
+    Gloss: waster
+
+  Key: ancerlif  →  Norm: āncerlīf
+    BT_headword: áncer-líf
+    Sweet_headword: ancer-līf
+    POS: N
+
+  Key: ancersetl  →  Norm: āncersetl
+    BT_headword: áncer-setl
+    Sweet_headword: ancer-setl
+    POS: N
+
+
+Type: CH [ellis_vocalic]
+--------------------------------------------------
+  Key: abeogan  →  Norm: ābēogan
+    CH_headword: ābēogan
+    Gloss: = ābūgan
+
+  Key: abeogan  →  Norm: ābēogan
+    CH_headword: ābēgan
+    Gloss: = ābȳgan
+
+  Key: abernan  →  Norm: ābeornan
+    CH_headword: ābernan
+    Gloss: = ābeornan
+
+
+Type: CH [exact]
+--------------------------------------------------
+  Key: abbad  →  Norm: abbad
+    CH_headword: abbad
+
+  Key: abedisse  →  Norm: abedisse
+    CH_headword: abedisse
+    Gloss: = abbudesse
+
+  Key: abegan  →  Norm: ābēgan
+    CH_headword: ābēgan
+    Gloss: = ābȳgan
+
+
+Type: CH [single]
+--------------------------------------------------
+  Key: ab  →  Norm: āb
+    CH_headword: āb
+
+  Key: abbudesse  →  Norm: abbudesse
+    CH_headword: abbudesse
+    POS: N
+
+  Key: abbudleast  →  Norm: abbudlēast
+    CH_headword: abbudlēast
+    POS: N
+
+
+Type: CH+DOE [ellis_vocalic]
+--------------------------------------------------
+  Key: allunga  →  Norm: eallunga
+    CH_headword: eallunga
+    DOE_headword: eallunga
+    POS: Adv
+    Gloss: adv. altogether
+
+  Key: behionan  →  Norm: beheonan
+    CH_headword: be-heonan
+    DOE_headword: be-heonan
+    POS: Adv
+    Gloss: . Adverb: on this side
+
+  Key: bufon  →  Norm: bufon
+    CH_headword: bufan
+    DOE_headword: bufan
+    POS: Adv
+    Gloss: I. prep. (w. d.) over
+
+
+Type: CH+DOE [exact]
+--------------------------------------------------
+  Key: abecede  →  Norm: ābēcēdē
+    CH_headword: ābēcēdē
+    DOE_headword: ābēcēdē
+    POS: N
+    Gloss: ABC
+
+  Key: abutan  →  Norm: ābūtan
+    CH_headword: ābūtan
+    DOE_headword: a-būtan
+    POS: Adv
+    Gloss: A. Adverb
+
+  Key: abyrging  →  Norm: ābyrging
+    CH_headword: ābyrging
+    DOE_headword: a-byrging
+    POS: N
+
+
+Type: CH+DOE+ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: afligung  →  Norm: āflīegung
+    CH_headword: āflīgung
+    DOE_headword: a-flȳgung
+    ParCorOE: āflīegung
+    POS: N
+
+  Key: afyrrednes  →  Norm: āfierrednes
+    CH_headword: āfierrednes
+    DOE_headword: a-fyrrednes
+    ParCorOE: āfierrednes
+    POS: N
+
+  Key: alysednes  →  Norm: ālīesednes
+    CH_headword: ālīes-ednes
+    DOE_headword: a-lȳsednes
+    ParCorOE: ālīesednes
+    POS: N
+
+
+Type: CH+DOE+ParCorOE [exact]
+--------------------------------------------------
+  Key: abedecian  →  Norm: ābedecian
+    CH_headword: ābedecian
+    DOE_headword: a-bedecian
+    ParCorOE: ābedecian
+    POS: V
+    Gloss: to get by begging or asking
+
+  Key: ablawnes  →  Norm: āblāwnes
+    CH_headword: āblāw-nes
+    DOE_headword: a-blāwnes
+    ParCorOE: āblāwnes
+    POS: N
+
+  Key: ablinnednes  →  Norm: āblinnednes
+    CH_headword: āblinnednes
+    DOE_headword: a-blinnednes
+    ParCorOE: āblinnednes
+    POS: N
+
+
+Type: CH+DOE+ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: anliepnes  →  Norm: ānlīpnes
+    CH_headword: ānlīpnes
+    Sweet_headword: ān-līepnes
+    DOE_headword: ān-līpnes
+    ParCorOE: ānlīpnes
+    POS: N
+
+  Key: ascyppan  →  Norm: āscieppan
+    CH_headword: āscieppan
+    Sweet_headword: ā-scięppan
+    DOE_headword: a-scyppan
+    ParCorOE: āscieppan
+    POS: V
+
+  Key: behliehhan  →  Norm: behlyhhan
+    CH_headword: behlyhhan
+    Sweet_headword: be-hlięhhan
+    DOE_headword: be-hlyhhan
+    ParCorOE: behlyhhan
+    POS: V
+
+
+Type: CH+DOE+ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: ablæcung  →  Norm: āblǣcung
+    CH_headword: āblǣcung
+    Sweet_headword: ā-blǣc-ung
+    DOE_headword: a-blǣcung
+    ParCorOE: āblǣcung
+    POS: N
+
+  Key: abolgennes  →  Norm: ābolgennes
+    CH_headword: ābolgennes
+    Sweet_headword: ābolgennes
+    DOE_headword: a-bolgennes
+    ParCorOE: ābolgennes
+    POS: N
+
+  Key: abreotnes  →  Norm: ābrēotnes
+    CH_headword: ābrēotnes
+    Sweet_headword: ā-brēot-nes
+    DOE_headword: a-brēotnes
+    ParCorOE: ābrēotnes
+    POS: N
+
+
+Type: CH+DOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: balde  →  Norm: bealde
+    CH_headword: bealde
+    Sweet_headword: beald-e
+    DOE_headword: bealde
+    POS: Adv
+    Gloss: adv. boldly
+
+  Key: begiondan  →  Norm: begeondan
+    CH_headword: begeondan
+    Sweet_headword: be-geondan
+    DOE_headword: be-geondan
+    POS: Adv
+    Gloss: A. Adverb: beyond
+
+  Key: depe  →  Norm: dēope
+    CH_headword: dēope
+    Sweet_headword: dēop-e
+    DOE_headword: dēope
+    POS: Adv
+    Gloss: adv. deeply
+
+
+Type: CH+DOE+Sweet [exact]
+--------------------------------------------------
+  Key: abufan  →  Norm: ābūfan
+    CH_headword: ābūfan
+    Sweet_headword: a-bufan
+    DOE_headword: a-bufan
+    POS: Adv
+    Gloss: adv. above
+
+  Key: angelcynn  →  Norm: Angelcynn
+    CH_headword: Angelcynn
+    Sweet_headword: Angel-cynn
+    DOE_headword: angel-cynn
+    POS: N
+    Gloss: the English people: England
+
+  Key: angelðeod  →  Norm: Angelðeod
+    CH_headword: Angelðeod
+    Sweet_headword: Angel-þēod
+    DOE_headword: angel-þēod
+    POS: N
+    Gloss: the English people: England.
+
+
+Type: CH+ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: alda  →  Norm: Alda
+    CH_headword: ealda
+    ParCorOE: ealda
+    POS: N
+    Gloss: old man
+
+  Key: andgitleast  →  Norm: andgietlēast
+    CH_headword: andgitlēast
+    ParCorOE: andgietlēast
+    POS: N
+    Gloss: want of understanding
+
+  Key: anwealdend  →  Norm: anwealdend
+    CH_headword: onwealdend
+    ParCorOE: anwealdend
+    POS: N
+
+
+Type: CH+ParCorOE [exact]
+--------------------------------------------------
+  Key: ablinnendlice  →  Norm: āblinnendlīce
+    CH_headword: āblinnendlīce
+    ParCorOE: āblinnendlīce
+    POS: V
+    Gloss: indefatigably
+
+  Key: acennicge  →  Norm: ācennicge
+    CH_headword: ācennicge
+    ParCorOE: ācennicge
+    POS: N
+
+  Key: acwudu  →  Norm: ācwudu
+    CH_headword: ācwudu
+    ParCorOE: ācwudu
+    POS: N
+
+
+Type: CH+ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: alisend  →  Norm: ālīesend
+    CH_headword: ālīesend
+    Sweet_headword: ā-līes|end
+    ParCorOE: ālīesend
+    POS: N
+    Gloss: liberator
+
+  Key: begiemen  →  Norm: begīmen
+    CH_headword: begīmen
+    Sweet_headword: be-gīem-en
+    ParCorOE: begīmen
+    POS: N
+    Gloss: attention
+
+  Key: bergælfen  →  Norm: beorgælfen
+    CH_headword: beorgælfen
+    Sweet_headword: beorg|ælfen
+    ParCorOE: beorgælfen
+    POS: N
+    Gloss: orcad.
+
+
+Type: CH+ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: ablysung  →  Norm: āblysung
+    CH_headword: āblysung
+    Sweet_headword: āblys-ung
+    ParCorOE: āblysung
+    POS: N
+
+  Key: abraslian  →  Norm: ābraslian
+    CH_headword: ābraslian
+    Sweet_headword: ābraslian
+    ParCorOE: ābraslian
+    POS: V
+
+  Key: aetan  →  Norm: āetan
+    CH_headword: āetan
+    Sweet_headword: ā·etan
+    ParCorOE: āetan
+    POS: V
+
+
+Type: CH+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: abiegendlic  →  Norm: ābȳgendlic
+    CH_headword: ābȳgendlic
+    Sweet_headword: ā-bīeg-endlic
+    Gloss: v. un-ā.
+
+  Key: abiewan  →  Norm: ābȳwan
+    CH_headword: ābȳwan
+    Sweet_headword: ā-bīewan
+    Gloss: to rub off
+
+  Key: aciegan  →  Norm: ācīgan
+    CH_headword: ācīgan
+    Sweet_headword: ā-cīegan
+    Gloss: to call
+
+
+Type: CH+Sweet [exact]
+--------------------------------------------------
+  Key: abal  →  Norm: abal
+    CH_headword: abal
+    Sweet_headword: abal
+    Gloss: = afol
+
+  Key: abarian  →  Norm: ābarian
+    CH_headword: ābarian
+    Sweet_headword: ā-barian
+    Gloss: to lay bare
+
+  Key: aberendlic  →  Norm: āberendlic
+    CH_headword: āberendlic
+    Sweet_headword: ā-berend-lic
+    Gloss: bearable.
+
+
+Type: DOE [ellis_vocalic]
+--------------------------------------------------
+  Key: abiegan  →  Norm: ābīegan
+    DOE_headword: a-bīgan
+    POS: V
+    Gloss: . to bend
+
+  Key: abigan  →  Norm: ābīegan
+    DOE_headword: a-bīgan
+    POS: V
+    Gloss: . to bend
+
+  Key: abigan  →  Norm: ābīegan
+    DOE_headword: a-bīgan
+    POS: V
+    Gloss: . to bend
+
+
+Type: DOE [exact]
+--------------------------------------------------
+  Key: abered  →  Norm: ābered
+    DOE_headword: a-bered
+    POS: Adj
+    Gloss: cunning
+
+  Key: abiddan  →  Norm: ābiddan
+    DOE_headword: a-bīdan
+    POS: V
+
+  Key: abiddan  →  Norm: ābiddan
+    DOE_headword: a-biddan
+    POS: V
+
+
+Type: DOE [single]
+--------------------------------------------------
+  Key: abba  →  Norm: abba
+    DOE_headword: abba
+    POS: N
+
+  Key: abindan  →  Norm: abindan
+    DOE_headword: a-bindan
+    POS: V
+
+  Key: ablegenod  →  Norm: ablegenod
+    DOE_headword: a-blegenod
+    POS: Adj
+
+
+Type: DOE+ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: adiefan  →  Norm: ādȳfan
+    DOE_headword: a-dȳfan
+    ParCorOE: ādȳfan
+    POS: V
+    Gloss: to deafen
+
+  Key: adlieg  →  Norm: ādlig
+    DOE_headword: ādlig
+    ParCorOE: ādlig
+    POS: Adj
+    Gloss: A. as adjective
+
+  Key: afliegung  →  Norm: āflīegung
+    DOE_headword: a-flȳgung
+    ParCorOE: āflīegung
+    POS: N
+
+
+Type: DOE+ParCorOE [exact]
+--------------------------------------------------
+  Key: abbodesse  →  Norm: abbodesse
+    DOE_headword: abbodesse
+    ParCorOE: abbodesse
+    POS: N
+
+  Key: abbodleast  →  Norm: abbodlēast
+    DOE_headword: abbod-least
+    ParCorOE: abbodlēast
+    POS: N
+
+  Key: abeteon  →  Norm: ābetēon
+    DOE_headword: a-betēon
+    ParCorOE: ābetēon
+    POS: V
+
+
+Type: DOE+ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: aðrytan  →  Norm: āðrīetan
+    Sweet_headword: ā-þrīetan
+    DOE_headword: a-þrȳtan
+    ParCorOE: āðrīetan
+    POS: V
+    Gloss: weary
+
+  Key: ciegere  →  Norm: cīgere
+    Sweet_headword: cīeg-ere
+    DOE_headword: cīgere
+    ParCorOE: cīgere
+    POS: N
+    Gloss: caller
+
+  Key: gealdricge  →  Norm: galdricge
+    Sweet_headword: gealdricge
+    DOE_headword: galdricge
+    ParCorOE: galdricge
+    POS: N
+
+
+Type: DOE+ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: abboddom  →  Norm: abboddōm
+    Sweet_headword: abbod-dōm
+    DOE_headword: abbod-dōm
+    ParCorOE: abboddōm
+    POS: N
+
+  Key: abbodhad  →  Norm: abbodhād
+    Sweet_headword: abbod-hād
+    DOE_headword: abbod-hād
+    ParCorOE: abbodhād
+    POS: N
+
+  Key: ablinnendnes  →  Norm: āblinnendnes
+    Sweet_headword: ā-blinn-e(n)dnes
+    DOE_headword: a-blinnendnes
+    ParCorOE: āblinnendnes
+    POS: N
+    Gloss: cessation
+
+
+Type: DOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: abiernan  →  Norm: ābiernan
+    Sweet_headword: ā-biernan
+    DOE_headword: a-byrnan
+    POS: V
+
+  Key: abyrnan  →  Norm: ābiernan
+    Sweet_headword: ā-biernan
+    DOE_headword: a-byrnan
+    POS: V
+
+  Key: ahyrding  →  Norm: āhierding
+    Sweet_headword: ā-hięrd-ing
+    DOE_headword: a-hyrding
+    POS: N
+    Gloss: hardening.
+
+
+Type: DOE+Sweet [exact]
+--------------------------------------------------
+  Key: abærnan  →  Norm: ābærnan
+    Sweet_headword: abærnan
+    DOE_headword: a-bærnan
+    POS: V
+    Gloss: burn = on-.
+
+  Key: actreow  →  Norm: āctrēow
+    Sweet_headword: āc-trēow
+    DOE_headword: āc-trēow
+    POS: N
+
+  Key: afremdung  →  Norm: āfremdung
+    Sweet_headword: ā-fręmd-ung
+    DOE_headword: a-fremdung
+    POS: N
+
+
+Type: ParCorOE [ellis_vocalic]
+--------------------------------------------------
+  Key: acon  →  Norm: Acon
+    ParCorOE: Acon
+    POS: Name
+
+  Key: afeon  →  Norm: Afen
+    ParCorOE: Afen
+    POS: Name
+
+  Key: ahyrding  →  Norm: āhierding
+    ParCorOE: āhierding
+    POS: Adj
+
+
+Type: ParCorOE [exact]
+--------------------------------------------------
+  Key: a  →  Norm: ā
+    ParCorOE: ā
+    POS: V
+
+  Key: ablegned  →  Norm: āblegned
+    ParCorOE: āblegned
+    POS: Adj
+
+  Key: ablered  →  Norm: āblered
+    ParCorOE: āblered
+    POS: Adj
+
+
+Type: ParCorOE [single]
+--------------------------------------------------
+  Key: abbacuc  →  Norm: Abbacuc
+    ParCorOE: Abbacuc
+    POS: Name
+
+  Key: abbandun  →  Norm: Abbandūn
+    ParCorOE: Abbandūn
+    POS: Name
+
+  Key: abbendun  →  Norm: Abbendun
+    ParCorOE: Abbendun
+    POS: Name
+
+
+Type: ParCorOE+Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: acierran  →  Norm: ācirran
+    Sweet_headword: ā-cięrr|an
+    ParCorOE: ācirran
+    POS: V
+    Gloss: turn
+
+  Key: aflegan  →  Norm: āflēogan
+    Sweet_headword: ā-flēogan
+    ParCorOE: āflēogan
+    POS: V
+    Gloss: fly — biþ āflogen tō is addicted to.
+
+  Key: ahirdan  →  Norm: āhierdan
+    Sweet_headword: ā-hięrd|an
+    ParCorOE: āhierdan
+    POS: V
+    Gloss: harden
+
+
+Type: ParCorOE+Sweet [exact]
+--------------------------------------------------
+  Key: afleogan  →  Norm: āflēogan
+    Sweet_headword: ā-flēogan
+    ParCorOE: āflēogan
+    POS: V
+
+  Key: ahierdan  →  Norm: āhierdan
+    Sweet_headword: ā-hięrd|an
+    ParCorOE: āhierdan
+    POS: V
+    Gloss: harden
+
+  Key: ahwierfan  →  Norm: āhwierfan
+    Sweet_headword: ā-hwięrfan
+    ParCorOE: āhwierfan
+    POS: V
+    Gloss: turn away.
+
+
+Type: Sweet [ellis_vocalic]
+--------------------------------------------------
+  Key: abiegan  →  Norm: ābīegan
+    Sweet_headword: ā-bīeg|an
+    Gloss: bend tr.
+
+  Key: abielgan  →  Norm: ābylgan
+    Sweet_headword: ā-bięlgan
+    Gloss: *
+
+  Key: abigan  →  Norm: ābīegan
+    Sweet_headword: ā-bīeg|an
+    Gloss: bend tr.
+
+
+Type: Sweet [exact]
+--------------------------------------------------
+  Key: abecede  →  Norm: ābēcēdē
+    Sweet_headword: ābēcēdē
+    Gloss: alphabet.
+
+  Key: abedecian  →  Norm: ābedecian
+    Sweet_headword: ābedecian
+    Gloss: *
+
+  Key: abeowan  →  Norm: ābēowan
+    Sweet_headword: ā-bēowan
+    Gloss: = ābīewan.
+
+
+Type: Sweet [single]
+--------------------------------------------------
+  Key: (ge)biegendlic  →  Norm: (ge)bīegendlic
+    Sweet_headword: (ge)bīeg-endlic
+
+  Key: (ge)bisnung  →  Norm: (ge)bisnung
+    Sweet_headword: (ge)bisn-ung
+    POS: N
+
+  Key: (ge)blissung  →  Norm: (ge)blissung
+    Sweet_headword: (ge)blissung
+    POS: N
+

oe_dictionary.py

@@ -0,0 +1,291 @@
+import pandas as pd
+import re
+from pathlib import Path
+from typing import List, Dict, Optional, Union
+
+class OldEnglishDictionary:
+    """A class to query the aligned Old English Dictionary dataset."""
+    
+    def __init__(self, data_path: str = "data/unified_index.tab"):
+        """Initialize the dictionary with the unified index.
+        
+        Args:
+            data_path: Path to the unified_index.tab file
+        """
+        self.data_path = Path(data_path)
+        self.df = pd.read_csv(self.data_path, sep='\t')
+        
+        # Fill NaN values with empty strings for easier processing
+        self.df = self.df.fillna('')
+        
+        # Create lowercase versions of key columns for case-insensitive search
+        self.df['canonical_key_lower'] = self.df['canonical_key'].str.lower()
+        self.df['normalised_form_lower'] = self.df['normalised_form'].str.lower()
+        
+        # Dictionary sources
+        self.sources = ['BT', 'CH', 'Sweet', 'DOE', 'ParCorOE']
+        
+        # Count total entries
+        self.total_entries = len(self.df)
+        print(f"Loaded {self.total_entries} aligned entries from {self.data_path}")
+    
+    def search(self, query: str, 
+               mode: str = 'canonical', 
+               exact: bool = False, 
+               pos: Optional[str] = None, 
+               source: Optional[str] = None) -> pd.DataFrame:
+        """Search for entries matching the query.
+        
+        Args:
+            query: The search term
+            mode: Search mode ('canonical', 'normalised', 'headword')
+            exact: If True, match the entire term; if False, use substring matching
+            pos: Filter by part of speech
+            source: Filter by dictionary source
+            
+        Returns:
+            DataFrame with matching entries
+        """
+        query = query.lower()
+        
+        # Base query logic
+        if mode == 'canonical':
+            if exact:
+                results = self.df[self.df['canonical_key_lower'] == query]
+            else:
+                results = self.df[self.df['canonical_key_lower'].str.contains(query, regex=False)]
+        
+        elif mode == 'normalised':
+            if exact:
+                results = self.df[self.df['normalised_form_lower'] == query]
+            else:
+                results = self.df[self.df['normalised_form_lower'].str.contains(query, regex=False)]
+        
+        elif mode == 'headword':
+            # Search across all dictionary headword columns
+            mask = pd.Series(False, index=self.df.index)
+            for source in self.sources:
+                col = f"{source}_headword"
+                if col in self.df.columns:
+                    if exact:
+                        mask |= (self.df[col].str.lower() == query)
+                    else:
+                        mask |= (self.df[col].str.lower().str.contains(query, regex=False, na=False))
+            results = self.df[mask]
+            
+        else:
+            raise ValueError(f"Invalid search mode: {mode}. Use 'canonical', 'normalised', or 'headword'.")
+        
+        # Apply filters
+        if pos:
+            results = results[results['POS'].str.lower() == pos.lower()]
+            
+        if source:
+            col = f"{source}_headword"
+            if col in self.df.columns:
+                results = results[results[col] != '']
+            else:
+                raise ValueError(f"Invalid source: {source}. Use one of {self.sources}")
+        
+        return results
+    
+    def display_entry(self, entry: pd.Series) -> None:
+        """Display a single dictionary entry in a readable format.
+        
+        Args:
+            entry: A single row from the dataframe
+        """
+        print("\n" + "=" * 80)
+        print(f"CANONICAL KEY: {entry['canonical_key']}")
+        print(f"NORMALIZED FORM: {entry['normalised_form']}")
+        print(f"MATCH TYPE: {entry['match_type']}")
+        if entry['POS']:
+            print(f"PART OF SPEECH: {entry['POS']}")
+        if entry['Gloss']:
+            print(f"GLOSS: {entry['Gloss']}")
+        print("-" * 80)
+        
+        print("DICTIONARY HEADWORDS:")
+        for source in self.sources:
+            col = f"{source}_headword"
+            if col in entry and entry[col]:
+                print(f"  {source}: {entry[col]}")
+        print("=" * 80)
+    
+    def display_results(self, results: pd.DataFrame, limit: int = 10) -> None:
+        """Display search results in a readable format.
+        
+        Args:
+            results: DataFrame containing search results
+            limit: Maximum number of results to display
+        """
+        num_results = len(results)
+        
+        if num_results == 0:
+            print("No matching entries found.")
+            return
+        
+        print(f"\nFound {num_results} matching entries.")
+        
+        if num_results > limit:
+            print(f"Displaying first {limit} results.")
+            results = results.head(limit)
+        
+        for _, entry in results.iterrows():
+            self.display_entry(entry)
+    
+    def find_similar(self, query: str, method: str = 'sound') -> pd.DataFrame:
+        """Find entries similar to the query using various similarity methods.
+        
+        Args:
+            query: The search term
+            method: The similarity method ('sound', 'edit', 'prefix')
+            
+        Returns:
+            DataFrame with similar entries
+        """
+        query = query.lower()
+        
+        if method == 'sound':
+            # Apply Ellis vocalic transformations similar to those used in alignment
+            variations = self._generate_ellis_variations(query)
+            mask = pd.Series(False, index=self.df.index)
+            for variation in variations:
+                mask |= (self.df['canonical_key_lower'] == variation)
+            return self.df[mask]
+            
+        elif method == 'edit':
+            # Crude edit distance approximation - finding entries 
+            # that share at least half their characters with the query
+            query_set = set(query)
+            results = []
+            
+            for idx, row in self.df.iterrows():
+                canonical = row['canonical_key_lower']
+                # Skip very short terms or terms with big length difference
+                if len(canonical) < 3 or abs(len(canonical) - len(query)) > 3:
+                    continue
+                
+                canonical_set = set(canonical)
+                intersection = len(query_set.intersection(canonical_set))
+                union = len(query_set.union(canonical_set))
+                
+                # Jaccard similarity threshold
+                if intersection / union > 0.6:
+                    results.append(idx)
+            
+            return self.df.loc[results]
+            
+        elif method == 'prefix':
+            # Find entries that start with the query
+            return self.df[self.df['canonical_key_lower'].str.startswith(query)]
+            
+        else:
+            raise ValueError(f"Invalid method: {method}. Use 'sound', 'edit', or 'prefix'.")
+    
+    def _generate_ellis_variations(self, word: str) -> List[str]:
+        """Generate variations based on Ellis vocalic correspondences.
+        
+        Args:
+            word: The input word
+            
+        Returns:
+            List of phonologically plausible variations
+        """
+        variations = [word]
+        
+        # Ellis vocalic correspondences
+        transformations = [
+            (r'ie', r'y'),    # fierd/fyrd
+            (r'y', r'ie'),    # fyrd/fierd
+            (r'ie', r'i'),    # diere/dire
+            (r'i', r'ie'),    # diren/dieren
+            (r'io', r'eo'),   # bion/beon
+            (r'eo', r'io'),   # beorht/biorht
+            (r'on', r'an'),   # monig/manig
+            (r'an', r'on'),   # manig/monig
+            (r'om', r'am'),   # from/fram
+            (r'am', r'om'),   # fram/from
+            (r'rg', r'rh'),   # burg/burh
+            (r'rh', r'rg'),   # burh/burg
+            (r'ea', r'a'),    # eald/ald
+            (r'a', r'ea'),    # ald/eald
+            (r'eo', r'e')     # eofot/efot
+        ]
+        
+        for pattern, replacement in transformations:
+            if pattern in word:
+                variations.append(word.replace(pattern, replacement))
+        
+        return variations
+
+    def get_statistics(self) -> Dict[str, Union[int, float]]:
+        """Get statistics about the dictionary dataset.
+        
+        Returns:
+            Dictionary with statistics
+        """
+        stats = {
+            "total_entries": self.total_entries,
+            "multi_source_entries": len(self.df[self.df['match_type'] != 'single']),
+            "exact_matches": len(self.df[self.df['match_type'] == 'exact']),
+            "ellis_matches": len(self.df[self.df['match_type'] == 'ellis_vocalic']),
+            "single_source": len(self.df[self.df['match_type'] == 'single'])
+        }
+        
+        # Add source-specific counts
+        for source in self.sources:
+            col = f"{source}_headword"
+            if col in self.df.columns:
+                stats[f"{source}_entries"] = len(self.df[self.df[col] != ''])
+        
+        # Add POS distribution
+        pos_counts = self.df['POS'].value_counts().to_dict()
+        stats["pos_distribution"] = pos_counts
+        
+        return stats
+
+
+# Example usage
+if __name__ == "__main__":
+    oe_dict = OldEnglishDictionary()
+    
+    # Simple demo of the search functionality
+    print("\n=== SEARCH DEMONSTRATION ===")
+    
+    # Search by canonical key
+    print("\nSearching for entries with canonical key containing 'abelgan'...")
+    results = oe_dict.search("abelgan", mode="canonical")
+    oe_dict.display_results(results)
+    
+    # Search by normalized form
+    print("\nSearching for entries with normalized form containing 'ābēodan'...")
+    results = oe_dict.search("ābēodan", mode="normalised", exact=True)
+    oe_dict.display_results(results)
+    
+    # Search by headword across all dictionaries
+    print("\nSearching for entries where any dictionary has headword containing 'cyning'...")
+    results = oe_dict.search("cyning", mode="headword")
+    oe_dict.display_results(results, limit=5)
+    
+    # Filter by part of speech
+    print("\nSearching for noun entries with canonical key containing 'helm'...")
+    results = oe_dict.search("helm", mode="canonical", pos="N")
+    oe_dict.display_results(results, limit=5)
+    
+    # Find similar words
+    print("\nFinding entries similar to 'beon' using sound correspondences...")
+    results = oe_dict.find_similar("beon", method="sound")
+    oe_dict.display_results(results)
+    
+    # Show dictionary statistics
+    stats = oe_dict.get_statistics()
+    print("\n=== DICTIONARY STATISTICS ===")
+    for key, value in stats.items():
+        if key != "pos_distribution":
+            print(f"{key}: {value}")
+    
+    print("\nPart of Speech Distribution:")
+    for pos, count in stats["pos_distribution"].items():
+        if pos:  # Skip empty POS
+            print(f"  {pos}: {count}")