refem[10],
efem[9], ferm[9], fere[8], free[8], erem[5],
fee[7], ref[7], mee[4], mer[4], rem[4], mew[4], ewe[3], rew[3], wre[3],
ef[6], fe[6], em[3], me[3], ee[2], er[2], re[2], ew[2], we[2],
