opnę[9], nonę[8], open[5], peon[5], poen[5], opon[5], pono[5], neon[4], nono[4],
pnę[8], nep[4], pen[4], eon[3], one[3], non[3], ono[3],
pe[3], op[3], po[3], en[2], eo[2], no[2], on[2],
