bolo[7], lobo[7], obol[7], bono[6], obon[6], plon[6], loop[6], polo[6], pool[6], snob[6], boso[6], boss[6], opon[5], pono[5], solo[5], snop[5], opos[5], ospo[5], poss[5],
bol[6], lob[6], bon[5], los[4], ols[4], sol[4], osp[4], pss[4], ono[3], nos[3], son[3], oso[3], sos[3],
bo[4], op[3], po[3], no[2], on[2], os[2],
