bum[8], umb[8], but[8], tub[8], bun[7], bus[7], tum[7], mun[6], mus[6], sum[6], nut[6], stu[6], ust[6], snu[5], sus[5], wun[5], suw[5], tss[4],
bu[6], mu[5], tu[5], ut[5], nu[4], su[4], wu[4], ts[3],
