chyb[10], pych[9], pech[8], hecy[8], bece[7], eche[7], hece[7], cepy[7],
hyc[7], phy[7], che[6], ech[6], hec[6], hep[6], bee[5], ehe[5], cep[5],
by[5], be[4], eh[4], he[4], ce[3], pe[3], ee[2],
