YOU SAID:

i saw he saw sitting on a see saw i saw he saw he saw me

INTO JAPANESE

私は彼が見た彼が私を見た

BACK INTO ENGLISH

I saw him that he saw me

INTO JAPANESE

彼が私に会ったのを見た

BACK INTO ENGLISH

I saw him meet me

INTO JAPANESE

彼が私に会うのを見た

BACK INTO ENGLISH

I saw him meet me.

INTO JAPANESE

彼が私に会うのを見た。

BACK INTO ENGLISH

I saw him meet me.