YOU SAID:

I've forgotten how to see, I've forgotten if I can

INTO JAPANESE

私は見たく方法を忘れてしまった、私はできるなら忘れてしまった

BACK INTO ENGLISH

I forgot how I want to see, I forgot if I could

INTO JAPANESE

私は見たい方法を忘れてしまった、私はできたら忘れた

BACK INTO ENGLISH

I forgot how I wanted to see, I forgot if I could

INTO JAPANESE

私は見たかった方法を忘れていた、私はできたら忘れた

BACK INTO ENGLISH

I had forgotten how I wanted to see, I forgot if I could

INTO JAPANESE

私は自分が見たい方法を忘れていた、私はできたら忘れていた

BACK INTO ENGLISH

I had forgotten how I wanted to see, I had forgotten if I could

INTO JAPANESE

私は自分が見たい方法を忘れていた、私はできるならば忘れていた

BACK INTO ENGLISH

I had forgotten how I wanted to see, I had forgotten if I could