Table:
0
A
B
C
D
E
F
1
Late Old English (Anglian)
Early Middle English
Late Middle English
Early Modern English
Modern English
Example
2
æg, ǣg
/ai/
/ai/
/eː/
/ei/
dæg > day; grǣg > gray
3
eg
/ɛi/
/ai/
/eː/
/ei/
weg > way; regn > rain
4
ēg
/ei/ > /iː/
/iː/
/əi/
/ai/
ēage > ēge > eye; lēogan > lēgan > lie
5
æw, aw, agV
/au/
/au/
/ɔː/
/ɔː/
clawu > "claw"; lagu > "law"
6
ēw, ēow
/eu/
/iu/
/juː/
/juː/
hrēowan > "rue"
7
iw, īw, yw, ȳw
/iu/
/iu/
/juː/
/juː/
hīw > "hue"; nīwe > "new"
8
ugV, ūgV
/uː/
/uː/
/əu/
/au/
drugaþ > drouth > "drought"; būgan > "bow" /bau/
9
æh, ah, ag#
/auh/
/auh/
( [x] → nil) /ɔː/
/ɔː/
slæht (WS sleaht) + -or > "slaughter"
10
æh, ah, ag#
/auh/
/auh/
( [x] → /f/) /af/
/æf/
hlæhtor > "laughter"
11
eh
/ɛih/
/ɛih/
/ei/ > /eː/
/ei/
streht > "straight"
12
āh, āg#, oh, og#
/ɔuh/
/ɔuh/
( [x] → nil) /ou/ > /oː/
/ɒf/ (British), /ɔːf/ (American)
dāg > dāh > "dough"
13
āh, āg#, oh, og#
/ɔuh/
/ɔuh/
( [x] → /f/) /ɔf/
/ɒf/ (British), /ɔːf/ (American)
trog > "trough"
14
āhC, ohC, ōhC
/ɔuh/
/ɔuh/
/ɔː/
/ɔː/
dohtor > "daughter"; sōhte > "sought"
15
ōh#, ōg#
/ouh/ > /uːh/
/uːh/
( [x] → nil) /əu/
/au/
bōg > "bough"; plōg > plōh > "plough"
16
ōh#, ōg#
/ouh/ > /uːh/
/uːh/
( [x] → /f/) /ʊf/
(centralized) /ʌf/
tōh > "tough"; ruh > "rough"

Questions and formulas:
Question: What is the phonology used in the example streht > "straight"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="streht > straight"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,F2:F16="streht > straight"),2))
Level: medium
Question: What is the Anglian phonology used in the example dæg > "day"; grǣg > "gray"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="dæg > day; grǣg > gray"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,F2:F16="dæg > day; grǣg > gray"),1))
Level: medium
Question: What is the modern English phonology used in the example weg > "way"; regn > "rain"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="weg > way; regn > rain"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,F2:F16="weg > way; regn > rain"),5))
Level: medium
Question: What is the Early Modern English phonology used in the example bōg > "bough"; plōg > plōh > "plough"?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="bōg > bough; plōg > plōh > plough"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,F2:F16="bōg > bough; plōg > plōh > plough"),4))
Level: medium
Question: What is the Late Middle English equivalent of the Anglian æg, ǣg?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="æg, ǣg"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F16,A2:A16="æg, ǣg"),3))
Level: medium