YOU SAID:

My back door is dirty from my older brother’s puppy.

INTO JAPANESE

私の奥のドアは、私の兄の子犬から汚いです。

BACK INTO ENGLISH

My back door is dirty from my brother's puppy.

INTO JAPANESE

私のバックドアは私の兄弟の子犬から汚いです。

BACK INTO ENGLISH

My backdoor is dirty from my brother's puppy.

INTO JAPANESE

私のバックドアは私の兄弟の子犬から汚いです。

BACK INTO ENGLISH

My backdoor is dirty from my brother's puppy.