[0,2,1,6,3,5,4,12,7,11,8,10,9,20,13,19,14,18,15, 17,16,30,21,29,22,28,23,27,24,26,25,42,31,41,32, 40,33,39,34,38,35,37,36,56,43,55,44,54,45,53,46, 52,47,51,48,50,49,72,57,71,58,70,59,69,60,68]