open[5], peon[5], poen[5], ente[5], eten[5], neto[5],
pet[5], pot[5], top[5], nep[4], pen[4], net[4], ten[4], eto[4], not[4], ton[4], eon[3], one[3],
pe[3], op[3], po[3], et[3], te[3], ot[3], to[3], ee[2], en[2], eo[2], no[2], on[2],
