[1,2,3,4,5,6,8,9,13,7,11,10,12,14,17,15,18,19,16,
 20,21,22,24,25,27,26,28,23,29,30,32,33,31,34,36,
 38,37,35,40,41,39,42,43,45,46,44,48,49,51,50,47,
 52,55,53,56,57,54,58,59,60,61,63,64,65,62,66,67,
 68,69,70,72,73]