YOU SAID:

i ain't never seen two pretty best friends, there's always one of them gotta be ugly

INTO JAPANESE

私は2人のかなり親友を見たことがありません、彼らのうちの1人はいつも醜い必要があります

BACK INTO ENGLISH

I haven't seen two pretty best friends, one of them should always be ugly

INTO JAPANESE

私は2人のかなり親友を見たことがありません、そのうちの1人はいつも醜いはずです

BACK INTO ENGLISH

I haven't seen two pretty best friends, one of which should always be ugly

INTO JAPANESE

私は2人のかなり親友を見たことがありません。そのうちの1人はいつも醜いはずです

BACK INTO ENGLISH

I have never seen two pretty best friends. One of them should always be ugly

INTO JAPANESE

私は2人のかなりの親友を見たことがありません。それらの1つは常に醜いはずです

BACK INTO ENGLISH

I have never seen two pretty best friends. One of them should always be ugly