Left has a mouth but none of the others do because she needs it to beatbox stupid I don't know how you didn't figure that out man.
c2a they are named after what direction their arrow(s) point in. For compounds, like 5, it would be "right-left" 6, "right-down" 7, "right-up" 8, "2-right" 9, "2-right -left" (the space means separate it from the "2-right" part)
