open[5], peon[5], poen[5], pens[5], epos[5], osep[5], peso[5], snop[5],
nep[4], pen[4], sep[4], osp[4], eon[3], one[3], sen[3], nos[3], son[3],
pe[3], op[3], po[3], en[2], eo[2], no[2], on[2], es[2], se[2], os[2],
