エスキモー・アレウト語族
The number of cases varies, with Aleut languages having a greatly reduced case system compared to those of the Eskimo subfamily. Eskimo–Aleut languages possess voiceless plosives at the bilabial, coronal, velar and uvular positions in all languages except Aleut, which has lost the bilabial stops but retained the nasal. In the Eskimo subfamily a voiceless alveolar lateral fricative is also present.