Agusan language
Agusan is a Manobo language of northeastern Mindanao in the Philippines. Distribution and dialects. Agusan Manobo (consisting of the Umayam, Adgawan, Surigao, and Omayamnon dialects) is spoken in the following areas. Dibabawon Manobo is spoken in the following areas. Rajah Kabunsuwan Manobo is spoken in the following areas. The Omayamnon, Dibabawon, and Rajah Kabunsuwan dialects are divergent. Phonology. Consonants. In Agusan, the stops have unreleased variants when occurring before another consonant, silence, and in syllable final position. The glottal stop /ʔ/ occurs in all consonant positions. Of the continuants, all occur in syllable-initial position and all except  /h/ in word-final position. The consonants /d/ and /j/ are used interchangeably. Vowels. Agusan has only five vowels, /i/, /u/, /e/, /æ/, and /a/. Vowels may appear alone, after a consonant, or between consonants in a syllable. All vowels, with the exception of /æ/, may occur "in a sequence of identical vowels separated by a glottal stop". The vowel /e/ never occurs next to the consonant /r/.