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