ergo[6], oger[6], giro[6], gier[5], roie[5], girr[5], irre[4],
ego[5], geo[5], goi[5], gor[5], gei[4], oie[4], erg[4], ger[4], reg[4], roi[4], ire[3], irr[3],
go[4], ei[2], er[2], re[2],
