osobo[7],
bono[6], obon[6], bose[6], snob[6], boso[6],
bee[5], ben[5], bon[5], eon[3], one[3], ono[3], sen[3], nos[3], son[3], oso[3],
be[4], bo[4], ee[2], en[2], eo[2], no[2], on[2], es[2], se[2], os[2],
