yanb.y
yanbn.y
yassign.l
yassign.y
ydecdef.l
ydecdef.y
yexpr.l
yexpr.y
yident.y
yif.l
yif.y
yinclude.l
yinclude.y
yparenth.l
yparenth.y
ysymconst.l
ysymconst.y