|Apu tshissenimak tshetshi uitsheuakue (nana) Punissa ekusseniti.|
|I don’t know whether he (absent) went fishing with Puniss.|
This form is used when there is doubt about the event described by the verb. We do not know whether this event is happening or not.
|Apu tshissenimimaki Tshan utauia tshetshi tashkaitshenikue e peikussiniti.|
|I don’t know whether John’s father can split the wood by himself.|
The changed form forms another conjugation (#14b).
Link to the conjugation guide.