Editing Crow language (section)

===Phonological processes===
Phonological processes in Crow include:
*short vowel deletion: stem-final short vowels are deleted at a morpheme boundary unless a three-consonant cluster or a nasal plus voiceless obstruent would occur. Stem-final vowels do not delete before ''dak'', the coordinate noun-phrase conjunction. Sentence-final evidential suffixes also do not cause the final short vowel to be deleted.
*nasal assimilation: ''n'' assimilates to ''m'' in a cluster; ''nm'' clusters do not occur.
*sibilant assimilation: alveolar ''s'' and ''ss'' are realized as /sh/ at morpheme boundaries before all consonants except ''x'' and ''s''.
*vowel neutralization: word-finally, stem-final short vowels ''i'', ''a'' and ''u'' are neutralized to their corresponding mid nonround or round vowel: ''i'', ''a'' become ''e''; ''u'' becomes ''o''.
*identical vowel reduction: with suffixes beginning with ''a'', sequences of 3-4 identical vowel morae are reduced to two (''aa-a'' and ''aa-aa'' are reduced to ''aa''); exceptions are compounds and prefixes.
*long vowel reduction before ''h'': long vowels shorten before ''h'' in a syllable coda.
*final schwa deletion: the final schwa of a diphthong is deleted before suffixes beginning with ''a'' and before the plural; before other vowels, it is otherwise retained.
*palatal-dental alternation: stem-final ''ch'' and ''t'' are complementary; ''t'' occurs before ''a''-initial suffixes and plural ''u'', and ''ch'' everywhere else. This relations holds parallel for ''š'' - ''s''; and geminates ''čč'' and ''šš''. The ''č'' and ''š'' alternates occur before nonlow vowels, whereas ''t'' and ''s'' occur before low vowels. There are, however, a few exceptions to this complementary relationship, therefore these phonemes cannot be considered as allophones.
*palatal-velar alternation: there is a lexically conditioned ''č'' to ''k'' alternation; ''k'' occurs before the plural and before suffixes beginning with ''a'', not producing ''t''.
*stem ablaut: lexically conditioned alternation affecting stem-final long vowels triggered by the plural morphemes, the imperative, and ''a''-initial suffixes.  (''ii'' to ''aa'' ablaut; ''ee'' to ''ii'' ablaut; ''ee'' to ''aa'' ablaut.