Table:
0
A
B
C
D
E
F
G
1
Basic stem (root)
Present stem
Non-present stem
Participle
Verbal noun
Short stem
Meaning
2
-tor-
-ator-
-etor-
e-torr-i
e-tor-tze
e-tor
'come'
3
-bil-
-abil-
-ebil-
i-bil-i
i-bil-tze
i-bil
'go about'
4
-kar-
-akar-
-ekar-
e-karr-i
e-kar-tze
e-kar
'bring'
5
-uka- (< -duka-)
-auka-
-euka-
e-duki
e-duki-tze
e-duki
'hold, have'
6
(irregular: see below)
(irregular: see below)
(irregular: see below)
i-za-n
i-za-te
i-za-n
'be', auxiliary
7
-go-
-ago-
-ego-
e-go-n
e-go-te
e-go-n
'stay, be'
8
-oa-
-oa-
-i(h)oa-
j-oa-n
j-oa-te
j-oa-n
'go'
9
-rama-
-arama-
-erama-
e-rama-n
e-rama-te
e-rama-n
'take'

Questions and formulas:
Question: What's the number of verbal nouns with the basic stem (root) -bil-?
Formula: ROWS(UNIQUE(FILTER(E1, A1="-bil-")))
Formula2: ROWS(UNIQUE(FILTER(E2:E9, A2:A9="-bil-")))
Level: medium
Question: What does the non-present stem -erama- mean?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,C1="-erama-"),7))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,C2:C9="-erama-"),7))
Level: medium
Question: What's the participle when the verbal noun is i-bil-tze?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,E1="i-bil-tze"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,E2:E9="i-bil-tze"),4))
Level: medium
Question: What does the basic stem (root) -rama- mean?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,A1="-rama-"),7))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,A2:A9="-rama-"),7))
Level: medium
Question: What is the verbal noun connected to the participle e-duki?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,D1="e-duki"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,D2:D9="e-duki"),5))
Level: medium