Diphthongs

I think it might be useful if you could add how to output the diphthongs (with small ya/yu/yo) and geminate consonants (with small tsu).

Source: tatoeba (328069)

Many among us are not familiar with diphthongs but they are found in every phrase, sentence and paragraph. Question: How important are they in the Zamboangueño Chavacano language and what does "diphthong" mean? Answer: They are very important! Diphthongs are combinations of two vowels pronounced together in the same syllable, which produce a new distinct sound.

Source: tatoeba (4624642)

How many vowels does English have? If you said five, you were wrong. Standard British English has twelve, not counting diphthongs.

Source: tatoeba (6049604)

English is difficult to pronounce because of its ambiguous vowels and diphthongs and consonantal clusters. Is it really suitable as an international language?

Source: tatoeba (10372253)