pfe[8], fen[7], nef[7], fez[7], che[6], ech[6], hec[6], hep[6], hen[5], cep[5], cen[4], cne[4], nep[4], pen[4], cez[4], cze[4], zen[3],
ef[6], fe[6], eh[4], he[4], ce[3], pe[3], en[2], ez[2], ze[2],
