murig[8], mudir[7],
drum[6], murr[6], girr[5], urig[5], gurr[5], drud[4],
mir[5], mud[5], mur[5], rum[5], gur[4], dir[3], irr[3], dur[3],
im[4], mi[4], um[4], du[2], ud[2], ui[2], ur[2],
