@Felthry @Zeny@snouts.online It is literally the most common vowel system in the world in fact, by a mile. x3
@Thaminga @Zeny@snouts.online and that's weird! it means it independently developed in a bunch of different places
@Felthry @Zeny@snouts.online My best guess is to push the sounds even further apart; making the front vowels rounded and the back ones unrounded would produce far more similar sounds (/y ɯ ø ɤ a/).