I hope to include a few singing faces this year, I've got the pixels pushed, but now i noticed that the mouth shapes seem to vary of different faces. Under faces section there is options ai,E,ETC,FV,L,O, and i think a few more i can't remember. Can someone please help with which mount shapes are which? I saw a post somewhere by Gil that had stated something on FB but i can't find it. Any help much appreciated. Thanks