bud[8], bum[8], umb[8], but[8], tub[8], dum[7], mud[7], dut[7], tum[7], buz[7], bzu[7], dwu[6], uzd[6], muz[6], tuz[6], zwu[5],
bu[6], ud[5], mu[5], tu[5], ut[5], wu[4],
