Quiet Words

My newest conlang sketch is called Ampkohlaš [amp'.ko?.laS]. It currently has vowel harmony (more or less), hierarchical agreement, up to 3 arguments marked on the verb, evidentials, and temporal distance. The name actually means

"I told you that earlier today."
am-p-k-o-hla-š
today-1S-2S-Dir-tell.Aor-3Inan
with 1st person participant evidentiality implicit.

Everything could change, though, and suddenly, the o- doesn't look right ... I see, it should be

am-p-ko-0-hla-š
today-1S-2S-Dir-tell.Aor-3Inan