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