Native Language Speakers distinguish between things that happened in the past and that contrast with the present.
Preterit maker on the first and second person Naapan and Preterit Marker Pan on the third person indicates an action/state that was cut off in the past and no longer occurs. The Neutral word (Verb) is the first thing that is placed in the sentence: Eg,. ninibaa - I am sleeping, ninibaanaapan.