YOU SAID:

Greeted someone at the door, maybe

INTO JAPANESE

ドアで誰かに挨拶した、多分

BACK INTO ENGLISH

I greeted someone at the door, maybe.

INTO JAPANESE

私はドアで誰かに挨拶したのかもしれない。

BACK INTO ENGLISH

I may have greeted someone at the door.

INTO JAPANESE

私はドアで誰かに挨拶したかもしれません。

BACK INTO ENGLISH

I may have greeted someone at the door.