pfe[8], ref[7], frr[7], cep[5], cer[4], der[4], red[4], per[4], rep[4], drr[4], prr[4], cew[4], rew[3], wre[3], wrr[3],
ef[6], fe[6], ce[3], de[3], pe[3], er[2], re[2], ew[2], we[2],
