cafy[10], bacy[8], caby[8], bady[8], baca[7], caba[7], bada[7], bace[7],
caf[8], efy[8], efa[7], dyb[7], cab[6], bad[6], dba[6], aby[6],
fa[6], ef[6], fe[6], by[5], ba[4], be[4], ad[3], da[3], ce[3], de[3], aa[2],
