Géésǫ

Vowels
Géésǫ-sa has three basic vowel qualities: e (mid-front), o (mid-back) and a (low-back). The vowel e varies between [e] and [i~ɨ] depending on its environment. Each vowel may occur either short or long, and oral or nasalized, giving a total of 12 combinations. Vowels can also be pronounced with high or low pitch, i.e. Géésǫ-sa has two tones. Length, pitch and nasalization are phonemic.