[1,2,0,3,4,5,6,8,9,7,10,11,12,14,15,13,16,17,18, 20,21,19,22,24,25,26,27,23,28,29,30,32,33,34,35, 31,36,38,39,37,40,41,42,44,45,43,46,48,49,50,51, 47,52,54,55,56,57,53,58,59,60,62,63,64,65,61,66, 68,69,67,70,71,72]