crep[6], cent[6], cetn[6], cert[6], pert[6], trep[6], nerp[5], rent[5], tern[5], tren[5],
cep[5], pet[5], cen[4], cne[4], nep[4], pen[4], cer[4], per[4], rep[4], net[4], ten[4], ret[4], ter[4], ner[3], ren[3],
ce[3], pe[3], et[3], te[3], en[2], er[2], re[2],
