>>8633725well i struggle with the difference between ㅓand ㅗ in general then there's stuff like why is it 올리비아 instead of 오리비아 or 올이비아 like how it's like how it's 설아
it's also hard to hear extra vowels that i'm not conditioned to look for. like in 트와이스 it's hard to remember the 이 since i'm used to seeing wi as one sound u kno?