12_vowel : 모음 (vowel) : 80% :
고저
전후
원순
음소
high
front
unrounded
i
high
front
rounded
y
high
back
unrounded
ɯ
high
back
rounded
u
mid
front
unrounded
e
mid
back
unrounded
ɤ
mid
back
rounded
o
low
back
unrounded
a