Table:
0
A
B
C
D
E
1
Articulatory class
Non- stop
Plain stop
Aspirated stop
"Muddy" voice
2
牙音 "molar sounds"
(ㆁ)
ㄱ
ㅋ
ㄲ
3
舌音 "tongue sounds"
ㄴ
ㄷ
ㅌ
ㄸ
4
脣音 "lip sounds"
ㅁ
ㅂ
ㅍ
ㅃ
5
齒音 "incisor sounds"
ㅅ
ㅈ
ㅊ
ㅉ, ㅆ
6
喉音 "throat sounds"
ㅇ
ㆆ
ㅎ
ᅇ, ㆅ
7
輕脣音 "light lip sounds"
ㅱ
ㅸ
ㆄ
ㅹ

Questions and formulas:
Question: Which Articulatory class has and Aspirated stop of ㅍ?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="ㅍ"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="ㅍ"),1))
Level: medium
Question: Which Non- stop has an Aspirated stop of ㅎ?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="ㅎ"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="ㅎ"),2))
Level: medium
Question: If the Non- stop is (ㆁ), what is the Articulatory Class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="(ㆁ)"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="(ㆁ)"),1))
Level: medium
Question: Which Aspirated stop has a "Muddy" voice of ㄲ?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="ㄲ"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,E2:E7="ㄲ"),4))
Level: medium
Question: If the Plain stop is ㄷ, what is the Non- stop?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="ㄷ"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="ㄷ"),2))
Level: medium
Question: If the "Muddy" voice is ᅇ, ㆅ, what is the Articulatory class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="ᅇ, ㆅ"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,E2:E7="ᅇ, ㆅ"),1))
Level: medium