pech[8], eche[7], hece[7], chen[7],
pfe[8], fee[7], fen[7], nef[7], che[6], ech[6], hec[6], hep[6], ehe[5], hen[5], cep[5], cen[4], cne[4], nep[4], pen[4],
ef[6], fe[6], eh[4], he[4], ce[3], pe[3], ee[2], en[2],
