31. The Ghana Togo Mountain languages are examples of languages where nine-or ten-vowel systems are still found. 32. The Proto-Germanic vowel system was asymmetric and unstable. 33. Phonologically, Etruscan appears uncomplicated, with a four-vowel system and an apparent contrast between aspirated and unaspirated stops. 34. Hindustani natively possesses a symmetrical ten-vowel system . 35. The vowel system of Arrernte is unusual in that there are only two contrastive vowel phonemes, and. 36. A marked isogloss is the vowel systems . 37. The vowel systems of Volta Congo languages have been the subject of much historical comparative linguistic debate. 38. One example is the vowel system . 39. This resulted in a five-vowel system . 40. Indian alphabets have been claimed as the example used to create the vowel system of the Ge'ez abugida.
