opem[6], meno[5], omen[5], open[5], peon[5], poen[5],
mop[5], men[4], nem[4], mon[4], nom[4], nep[4], pen[4], eon[3], one[3],
em[3], me[3], om[3], pe[3], op[3], po[3], en[2], eo[2], no[2], on[2],
