Table:
0
A
B
C
D
E
1
Free
Free polite
Genitive 1
Genitive 2
Genitive 3
2
*[i-]aku
–
*=ku
*maku
*n-aku
3
*[i-]Su
*[i-]ka-Su
*=Su
*miSu
*ni-Su
4
*s(i)-ia
–
(*=ia)
–
*n(i)-ia
5
*i-ami
*[i-]k-ami
*=mi
*mami
*n(i)-ami
6
*([i])ita
*[i-]k-ita
*=ta
*mita
*n-ita
7
*i-amu
*[i-]k-amu
*=mu
*mamu
*n(i)-amu
8
*si-da
–
(*=da)
–
*ni-da

Questions and formulas:
Question: Which Free polite has a Genitive 3 of *ni-da?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="*ni-da"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,E2:E8="*ni-da"),2))
Level: medium
Question: Which Free polite has a Genitive 1 of *=ku?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="*=ku"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,C2:C8="*=ku"),2))
Level: medium
Question: Which Free has a Free polite of *[i-]k-ita?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="*[i-]k-ita"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,B2:B8="*[i-]k-ita"),1))
Level: medium
Question: Which Free polite has a Genitive 3 of *n(i)-ami?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="*n(i)-ami"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,E2:E8="*n(i)-ami"),2))
Level: medium
Question: Which Genitive 1 has a Free polite of –, and a Genitive 2 of –, and a Genitive 3 of *n(i)-ia?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(B1="–")*(D1="–")*(E1="*n(i)-ia")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,(B2:B8="–")*(D2:D8="–")*(E2:E8="*n(i)-ia")),3))
Level: medium
Question: Which Genitive 1 has a Genitive 3 of *n(i)-ia?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="*n(i)-ia"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,E2:E8="*n(i)-ia"),3))
Level: medium