efedr[10], depce[8], derce[7], ceper[7], perce[7],
fere[8], free[8], dece[6], cedr[6], cred[6], crep[6], erce[5],
pfe[8], fee[7], ref[7], cep[5], cer[4], der[4], red[4], per[4], rep[4],
ef[6], fe[6], ce[3], de[3], pe[3], ee[2], er[2], re[2],
