[7,6,5,4,3,2,1,0,15,14,13,12,11,10,9,8,23,22,21, 20,19,18,17,16,31,30,29,28,27,26,25,24,39,38,37, 36,35,34,33,32,47,46,45,44,43,42,41,40,55,54,53, 52,51,50,49,48,63,62,61,60,59,58,57,56,71,70,69, 68,67,66,65,64,79,78,77,76,75,74,73,72,87,86,85]