41. The digraph } } may be pronounced in some words ( before front vowels and before back ones ). 42. This is one reason they are written to the right of unrounded front vowels in the IPA vowel chart. 43. The pronunciation of varies depending on context; it is labial before back vowels and labiodental before front vowels . 44. However, the front vowel stems distinguish rounded vs . unroundedness based on the last vowel in the stem. 45. The / e / is realized as a low to mid-front vowel , usually between or high. 46. The evidence for the allophone after front vowels is indirect, as it is not indicated in the orthography. 47. A soft pronunciation before non-front vowels is usually indicated by a silent or ( e . g. 48. In the examples below, represents, =, and is spelled before back vowels and before front vowels . 49. Examples are Bulgarian has an open-mid, even though neither language has another phonemic mid front vowel . 50. The difference between bilabial consonants with and without a labio-velar release is relevant only before front vowels .
