byk[7], bym[7], bek[6], myk[6], mym[6], kpy[6], pyk[6], bzy[6], kem[5], mem[5], bez[5], pyz[5], zek[4], ezy[4],
by[5], be[4], my[4], em[3], me[3], pe[3], ez[2], ze[2],
