pnie[5], opie[5], open[5], peon[5], poen[5], nipo[5], pion[5], eoni[4],
pie[4], nep[4], pen[4], nip[4], pin[4], pni[4], poi[4], nie[3], eon[3], one[3], ino[3], oni[3],
pe[3], pi[3], op[3], po[3], en[2], in[2], ni[2], eo[2], no[2], on[2],
