[1,2,10,3,4,5,6,7,8,9,21,20,12,22,13,23,31,24,25, 41,26,27,28,14,29,30,32,15,33,34,35,51,36,37,38, 39,40,42,43,44,45,46,16,47,48,49,50,52,53,54,55, 56,17]