office[16],
riffe[11], frier[8],
reff[10], riff[10], core[8], orfe[8], coir[8], fror[8], fier[7], frei[7], reif[7], rief[7], roie[5], irre[4],
off[10], fei[6], cer[6], oie[4], roi[4], ire[3], irr[3],
ei[2], er[2], re[2],
