-aato

Etymology
Seemingly from ; however, compare, apparently formed from the same morphemes but without the unexpected vowel lengthening. According to Cáceres, it is unclear if this suffix in fact presents a long vowel, or if it rather has a geminated consonant after the vowel, and more study is needed to determine if perhaps it is not formed with but a different plural suffix specific to the nonpast tense.

Usage notes
This suffix can cause syllable reduction. The suffix takes the form when the preceding syllable is reducible and has an onset of,  when the preceding syllable ends in , and  in other contexts.