21. The semivowels and are written and. 22. Semivowels also appear post-vocally.23. Initially, / e / and / o / were realized with semivowels and, respectively. 24. With the interdentals excepted, the Marra consonants consist of a rhotics, and two semivowels . 25. Diphthongs may be transcribed with two vowel symbols or with a vowel symbol and a semivowel symbol. 26. Some phonologists have found that semivowels can be replaced with glottal stops in some varieties of Bundjalung. 27. In many morphological processes, a vowel i } } before another vowel may become the semivowel . 28. The closing diphthongs and triphthongs consist of a main vowel component followed by a shorter semivowel offglide or. 29. In its original form, it likely had the semivowel , as indicated by the meter in some cases. 30. It uses the letter for both and the letter for both ( these two semivowels are fairly rare ).