Datapoint Itbayat/Is a morphological distinction between perfective and imperfective aspect available on verbs?

Language or dialect:
Itbayat
Feature:
Is a morphological distinction between perfective and imperfective aspect available on verbs?
Coding:
absent (Yamada 2014: 53-57)
Comment:
A fairly exhaustive account of non-tense verbal morphology makes no mention of any aspectual markers which are similar to a perfective/imperfective distinction.