YOU SAID:

i think i can, i think i can't

INTO JAPANESE

私はできると思う、私はできないと思う

BACK INTO ENGLISH

I think I can, I don't think I can

INTO JAPANESE

出来ると思う、出来ないと思う

BACK INTO ENGLISH

I think I can, I don't think I can.

INTO JAPANESE

出来るとは思うが出来ない

BACK INTO ENGLISH

I know I can, but I can't.

INTO JAPANESE

出来る事は分かってるが出来ない

BACK INTO ENGLISH

I know I can, but I can't.