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