YOU SAID:

I am a pencil and youre a pen

INTO JAPANESE

私は鉛筆と youre のペン

BACK INTO ENGLISH

I youre pencil and pen.

INTO JAPANESE

私 youre の鉛筆とペン。

BACK INTO ENGLISH

I you're pencil and pen.

INTO JAPANESE

あなたは私鉛筆とペン。

BACK INTO ENGLISH

You are my pencils and pens.

INTO JAPANESE

あなたは私の鉛筆とペンです。

BACK INTO ENGLISH

You are my pencils and pens.