YOU SAID:

I have never seen two pretty best friends one of them is always 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人はいつも醜いです

BACK INTO ENGLISH

I have never seen two pretty best friends. One of them is always 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つは常に醜いです

BACK INTO ENGLISH

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