nyim neyiwa, mu'yuuch neyiwa

English: Translation
they came that way, how they came
phrase
Motion
Plural
Question
-m Direction/Location suffix
Meaning/Usage/Transcription Unclear/Questionable
-ch Same Subject Suffix
Lenition
Notes

In context, this may have been part of an indirect question, or was being asked as a hypothetical question on the subject of why things came to be. -a appears to be the question suffix but its function is questionable.

Nyim: nyip "that" + -m "to"

Lenition on -ch.