On grammatical class:
- di'inai
- tense interval modifier: irregularly/aperiodically; tense/modal; defaults as time tense.
- na'onai
- tense interval modifier: atypically; subjective tense/modal; defaults as time tense.
- ru'inai
- tense interval modifier: occasional/intermittent/discontinuous; defaults as time tense.
- ta'enai
- tense interval modifier: non-habitually; subjective tense/modal; defaults as time tense.