affix algic languages algonquian language algonquian languages allophone arapaho language back vowel bilabial consonant blackfoot language central vowel cheyenne dental consonant fricative consonant front vowel glottal consonant grammatical person language family montana morpheme nasal consonant native americans in the united states northern cheyenne indian reservation oklahoma orthography phonology pitch accent plains algonquian languages postalveolar consonant pronoun proto-algonquian language semivowel stop consonant suffix syllabic underlying representation unicode united states velar consonant verb voiceless wikipedia