prolly arent many usts, so if you dont happen to find any, youu can do one of 2 things:
1. find some kind of midi file for em and import it into utau (These can sometimes be found in descriptions of those synth piano tutorial things), then add your vowels or whatever
2. if you cant find any midis, you may have to make your own. There are loads of utau midi'ing tutorials on youtube, and i recommend Yuunarii's.