I bet now that i posted this comment more than 1% of people will guess it.
Maybe yudi, yucka, yutta
Ok, now I am gonna look some up, there must be more (familiar) Ow wait, Yvette came to mind too :) Still gonna look some up though
Edit: I found these: Yasmin and yolanda. And a whole bunch I ve never heard of and ones that you usually see with an "i" or a "j"
I was hoping X would be Xochitl, that's my favorite X name.