Table:
0
A
B
C
D
E
F
1
Case/Suffix
we two
you and I
you two
them two (the two)
who-two
2
nom-acc-inst
ngalbe
ngœba
ngipel
palai (Boigu pale)
ngawal
3
gen.
ngalben
ngœban
ngipen
palamun (Boigu palemun)
(as for singular)
4
dat.
ngalbelpa
ngœbalpa
ngipelpa
palamulpa (Boigu palemulpa)
(as for singular)
5
abl.
ngalbelngu
ngœbalngu
ngipelngu
palamulngu (Boigu palemulngu)
(as for singular)
6
loc.
ngalbeniya
ngœbaniya
ngipeniya
palamuniya (Boigu palemuniya)
(as for singular)

Questions and formulas:
Question: What is we two when the case/suffix is loc.?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="loc."),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="loc."),2))
Level: medium
Question: What is them two (the two) when we two is ngalbelpa?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="ngalbelpa"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,B2:B6="ngalbelpa"),5))
Level: medium
Question: What is them two (the two) when you and i is ngœbalngu?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="ngœbalngu"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,C2:C6="ngœbalngu"),5))
Level: medium
Question: What is who-two where you and i is ngœban?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="ngœban"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,C2:C6="ngœban"),6))
Level: medium
Question: What is we two where you two is ngipen?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="ngipen"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,D2:D6="ngipen"),2))
Level: medium
Question: What is who-two when you two is ngipelngu?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="ngipelngu"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,D2:D6="ngipelngu"),6))
Level: medium