The total number of diphthongs is not established, with bounds at 17 and 31. Several vowel combinations can be considered true monosyllabic diphthongs, made up of the main vowel (the nucleus) and the trailing vowel (the off-glide).
There isn't a precise total for diphthongs, with estimates ranging from 17 to 31. Certain vowel combinations can be considered true monosyllabic diphthongs, made up of the primary vowel (nucleus) and the trailing vowel (off-glide).