[2,1,4,6,3,5,8,10,7,12,9,11,14,16,13,18,15,20,22, 17,24,26,19,21,23,28,30,25,27,32,34,29,36,31,38, 33,40,42,35,44,37,46,39,41,48,50,52,54,43,45,56, 47,58,49,60,51,62,53,55,64,57,66,68,59,61,70,63, 72,65,67,74,76]