original_query: What happens to stem-final short vowels at a morpheme boundary?
query: What happens to stem-final short vowels at a morpheme boundary in Crow?
answer: Stem-final short vowels are deleted at a morpheme boundary unless a three-consonant cluster or a nasal plus voiceless obstruent would occur.  There are exceptions, such as before the coordinate noun-phrase conjunction *dak* and sentence-final evidential suffixes.