Table:
0
A
B
C
D
E
1
Perfect stem
Future stem
Imperfect stem
Short stem
Meaning
2
hartu
hartuko
hartzen
har
'take'
3
garbitu
garbituko
garbitzen
garbi
'clean'
4
kendu
kenduko
kentzen
ken
'take away, remove'
5
poztu
poztuko
pozten
poz
'be/become happy'
6
ibili
ibiliko
ibiltzen
ibil
'go about'
7
ikusi
ikusiko
ikusten
ikus
'see'
8
iritsi
iritsiko
iristen
irits
'arrive'
9
ireki
irekiko
irekitzen
ireki
'open'
10
bete
beteko
betetzen
bete
'fill'
11
jo
joko
jotzen
jo
'strike'
12
hil
hilko
hiltzen
hil
'die, kill'
13
egin
egingo
egiten
egin
'make, do'
14
eman
emango
ematen
eman
'give'
15
esan
esango
esaten
esan
'say'

Questions and formulas:
Question: What is the future stem for the word that has an imperfect stem of hartzen?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="hartzen"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,C2:C15="hartzen"),2))
Level: medium
Question: What is the imperfect stem for the word that has a future stem of ikusiko?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="ikusiko"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,B2:B15="ikusiko"),3))
Level: medium
Question: What is the short stem for the word that has a perfect stem of poztu?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="poztu"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,A2:A15="poztu"),4))
Level: medium
Question: What is the imperfect stem of the word that means 'take away, remove'?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="'take away, remove'"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,E2:E15="'take away, remove'"),3))
Level: medium
Question: What is the perfect stem for the word that has a future stem of emango?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="emango"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,B2:B15="emango"),1))
Level: medium