Yu

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)

My name is Xiao Yu.

Source: tatoeba (7242769)

Xiao Yu, this is Juan, and I am Juan's friend.

Source: tatoeba (7799682)

Confucius said: " Yu the Great's conduct, I could not point out any flaws. He consumes meager amount of food, while offering boastful riches to the Gods and ancestors; He always don the crudest attire, but wears lavish garments when worshipping; He resides in a small house, yet forges water ways and ditches with all his might. Figures like Yu the Great, I honestly cannot point out any reprehensible flaws."

Source: tatoeba (11272520)