crep[6], krep[6], cent[6], cetn[6], kent[6], cert[6], kret[6], trek[6], pert[6], trep[6], nerp[5], rent[5], tern[5], tren[5],
cek[5], cep[5], ket[5], tek[5], pet[5], cen[4], cne[4], nep[4], pen[4], cer[4], ker[4], rek[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],
