bece[7], eche[7], hece[7], becz[7], beze[6], esce[5],
che[6], ech[6], hec[6], bee[5], ehe[5], hes[5], bez[5], ces[4], cez[4], cze[4],
be[4], eh[4], he[4], ce[3], ee[2], es[2], se[2], ez[2], ze[2],
