you can voice 5 letters max if you want to know how a letter sounds like and then look at there sprite names Er is a rolled R And im allready voicing C,У,Ұ,Y allso the backwards N with a curve on top is called Xkaki (ks'kohkee)
Any letter you see on the screen is not taken by someone The 2nd bottom row is allmost just taken by people P is the evil one and no one has voiced him yet hes trying to spell достар P needs ALOT of lines if your going to voice him