bzy[6], bee[5], web[5], bez[5], esy[4], ewy[4], ezy[4], zys[4], wyz[4], zwy[4], ewe[3], swe[3], zew[3],
by[5], be[4], wy[3], ee[2], es[2], se[2], ew[2], we[2], ez[2], ze[2],