tumb[10], bomu[9], umbo[9], botu[9], buto[9], tubo[9], tomu[8], utom[8],
bum[8], umb[8], but[8], tub[8], obu[7], tum[7], bom[6], mob[6], bot[6], out[6], uto[6], tom[5],
bu[6], mu[5], tu[5], ut[5], bo[4], om[3], ot[3], to[3],