Observation
Nepati puwamuu. Whenever s/he sleeps, s/he dreams.
Mau iyakushiti. S/he cries whenever she is sick.

Forms like nepati and iakushiti are the changed forms of conjugation #12a, but constitute a whole new conjugation, with quite a different meaning. Such forms are used in order to situate the context of habitual events: every time X, Y. Their meaning is iterative.

Initial change is required on these verbs. For example, the dictionary form of nepati is nipau. The vowel of the first syllable i was changed to e.

Here is another example, taken from the Innu dictionary:

Kiashikaniti uapush apu nukushit, mishkut tepishkaniti mishta-papamipatau.
During the day, the hare does not show itself, however, at night it leaps about.

This sentence describes the habits of the hare, who usually comes out at night. The verb kiashikaniti means everytime it is day et  tepishkaniti every time it is night.

Link to the conjugation guide.