oper[8], pore[8], zerg[7], zero[7], ergo[6], oger[6],
epo[7], pro[7], zog[7], per[6], rep[6], ego[5], geo[5], gor[5], erz[5], zer[5], erg[4], ger[4], reg[4],
po[6], go[4], er[2], re[2],
