Table:
0
A
B
C
D
E
1
Letter
American
British
Australian
Examples
2
a /ə/
ə
ə
ə
circa, fauna, mania, quota
3
e /i, iː/
i
ɪ
i
ante, epitome, posse, simile
4
æ /i/
i
ɪ
i
algæ, larvæ, vertebræ
5
i, y /aɪ/
ai
aɪ
ɑe
alibi, Gemini, moly
6
o /oʊ/
ɞu
əu
əʉ
ego, Pluto, torpedo
7
u /juː/
(j)u
ju
jʉ
(in) situ

Questions and formulas:
Question: What is the British letter with o /oʊ/?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="o /oʊ/"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,A2:A7="o /oʊ/"),3))
Level: medium
Question: Which letter has the British aɪ?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="aɪ"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="aɪ"),1))
Level: medium
Question: What does American have if Australia has əʉ?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="əʉ"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,D2:D7="əʉ"),2))
Level: medium
Question: What is the British letter if American is ə?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="ə"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7="ə"),3))
Level: medium
Question: What is the Australian letter with a British of ɪ and a letter of æ /i/??
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="ɪ")*(A1="æ /i/")),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,(C2:C7="ɪ")*(A2:A7="æ /i/")),4))
Level: medium