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