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