bacy[8], caby[8], bady[8], bace[7], scab[7], basy[7], seba[6], sady[6], desy[6], desa[5],
dyb[7], cab[6], bad[6], dba[6], aby[6], bas[5], sad[4], ces[4], des[4], asy[4], esy[4],
by[5], ba[4], be[4], ad[3], da[3], ce[3], de[3], as[2], es[2], se[2],
