41. Two-vowel systems are unusual, but occur in closely related Arrernte as well as in some Northwest Caucasian languages. 42. The main difference between the Southern Vanuatu vowel systems lies in the status of the mid central vowel. 43. Despite this, the Hindustani vowel system is quite similar to that of English, in contrast to the consonants. 44. Quiripi's vowel system as reconstituted by Rudes was similar to that of the other Southern New England Algonquian languages. 45. Yiddish speakers ( whose vowel system is simplified ) might have difficulty distinguishing or pronouncing the ?and ? 46. :Of the standard Romance languages, French has the most altered vowel system and the largest number of vowel phonemes. 47. This shift has historically received less attention from linguists than the evolution of registers and the complicated vowel systems . 48. All Ghana Togo Mountain languages are tonal and most have a nine or ten vowel system employing ATR vowel harmony. 49. Rhymes : Baima rhymes are very similar to the Kham Tibetan dialect but its vowel system is much more complex. 50. The Ottawa writing system is a minor adaptation of a very similar one used for other dialects of Double Vowel system
