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