botu[9], buto[9], tubo[9], tsub[9], ostu[7], suto[7], osuw[6], owsu[6],
but[8], tub[8], obu[7], bus[7], bot[6], out[6], uto[6], stu[6], ust[6], sou[5], suw[5], sto[4],
bu[6], tu[5], ut[5], bo[4], su[4], wu[4], ot[3], to[3], ts[3], os[2],
