core[8], coir[8], cour[8], cure[7], roie[5], euro[5], roue[5], eier[4], eire[4], euer[4], eure[4], reue[4],
cer[6], oie[4], roi[4], ree[3], ire[3], reu[3], ure[3],
ei[2], er[2], re[2], ui[2], ur[2],
