Table:
0
A
B
C
D
E
F
G
1
Class
Part 1
Part 2
Part 3
Part 4
Verb meaning
Usual PIE origin
2
1
*rīdaną
*raid
*ridun
*ridanaz
to ride
Vowel + y/i.
3
2a
*freusaną
*fraus
*fruzun
*fruzanaz
to freeze
Vowel + w/u.
4
2b
*lūkaną
*lauk
*lukun
*lukanaz
to close, to shut
Unknown.
5
3a
*bindaną
*band
*bundun
*bundanaz
to bind
Vowel + m or n + another consonant.
6
3b
*werþaną
*warþ
*wurdun
*wurdanaz
to become
Vowel + l or r + another consonant.
7
4
*beraną
*bar
*bērun
*buranaz
to bear
Vowel + l, r, m or n + no other consonant.

Questions and formulas:
Question: For part 2 *lauk, what is listed for part 4?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="*lauk"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,C2:C7="*lauk"),5))
Level: medium
Question: What is the verb meaning for *bundun?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,D1="*bundun"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,D2:D7="*bundun"),6))
Level: medium
Question: For part 2 *raid, what is listed for part 3?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="*raid"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,C2:C7="*raid"),4))
Level: medium
Question: What word is listed under part 2 for part 4 *ridanaz?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,E1="*ridanaz"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,E2:E7="*ridanaz"),3))
Level: medium
Question: What is listed under part 1 for class 3b?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,A1="3b"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G7,A2:A7="3b"),2))
Level: medium