bums[8], drum[6], muds[6], rums[6], drud[4],
bum[7], mud[5], mur[5], rum[5], bus[5], mus[5], ums[5], dur[3], sud[3], uds[3], rus[3], sur[3], urs[3],
um[4], du[2], ud[2], ur[2],
