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