Table:
0
A
B
C
D
E
1
Letter
Pronunciation spelled free
Pronunciation spelled checked
Example spelled free
Example spelled checked
2
a
aː
ɑ
later /ˈlaːtər/ ("later")
lat /lɑt/ ("lat")
3
e
eː
ɛ
telen /ˈteːlə(n)/ ("to cultivate")
tel /tɛl/ ("count")
4
i
i(ː)
ɪ
Tine /ˈtinə/ (a name)
tin /tɪn/ ("tin")
5
o
oː
ɔ
open /ˈoːpə(n)/ ("open")
op /ɔp/ ("on")
6
u
y(ː)
ʏ
Lukas /ˈlykɑs/ (a name)
luk /lʏk/ ("succeed")

Questions and formulas:
Question: What is Pronunciation Spelled Free, when Pronunciation Spelled Checked is "ʏ"?
Formula: FILTER(B1,C1="ʏ")
Formula2: FILTER(B2:B6,C2:C6="ʏ")
Level: easy
Question: What is Letter, when Example Spelled Checked is "tin /tɪn/ ("tin")"?
Formula: FILTER(A1,E1="tin /tɪn/ (tin)")
Formula2: FILTER(A2:A6,E2:E6="tin /tɪn/ (tin)")
Level: easy
Question: What is Pronunciation Spelled Free, when Pronunciation Spelled Checked is "ɛ"?
Formula: FILTER(B1,C1="ɛ")
Formula2: FILTER(B2:B6,C2:C6="ɛ")
Level: easy
Question: What is Pronunciation Spelled Checked, when Example Spelled Checked is "tin /tɪn/ ("tin")"
Formula: FILTER(C1,E1="tin /tɪn/ (tin)")
Formula2: FILTER(C2:C6,E2:E6="tin /tɪn/ (tin)")
Level: easy
Question: What is Example Spelled Free, when Example Spelled Checked is "op /ɔp/ ("on")"?
Formula: FILTER(D1,E1="op /ɔp/ (on)")
Formula2: FILTER(D2:D6,E2:E6="op /ɔp/ (on)")
Level: easy
Question: What is Pronunciation Spelled Free, when Pronunciation Spelled Checked is "ɑ"?
Formula: FILTER(B1,C1="ɑ")
Formula2: FILTER(B2:B6,C2:C6="ɑ")
Level: easy