on-
onko-ko/ manko-ko-ko/ kimo-ko,
-an
ko-koan/ ko-koi/ kiyo-koan,
me--an
meko-koan/ eko-koan
To scratch; the action is several short, back-and-forth movements.
Towan ko-koiy toktok to tep chakel i kothotto.
He is scratching his head because he has lots of hair lice.
To scratch; the action is a single, long motion, such as a cat striking out at another animal.