dobo[7], boso[6], spod[6], boss[6], sodo[5], opos[5], ospo[5], poss[5], wodo[5], sowo[4],
bod[6], pod[5], odo[4], osp[4], pss[4], oso[3], sos[3], owo[3],
bo[4], do[3], od[3], op[3], po[3], os[2],
