cepem[8], cerem[7], merce[7], ceper[7], perce[7], repem[7],
emce[6], peem[6], merc[6], crep[6], perm[6], erce[5], erem[5],
cep[5], mee[4], cer[4], mer[4], rem[4], per[4], rep[4],
ce[3], em[3], me[3], pe[3], ee[2], er[2], re[2],
