/ë/ is inserted as a transition sound (1) between /k-/ and /n/ and (2) prefix and between /w/ and /n/.
Unstressed /ë/of the inverse suffix is elided.
/w/ of the verb root is devoiced before voiceless /k/, thus accounting for its realization as /h/.
/w/ of the negative suffix is elided between vowels.
First person suffix /-nan/ is realized as /-na/ in final position.