[1,3,4,0,4,5,1,5,6,2,6,7,3,7,8,4,8,9,5,9,10,6,10, 11,7,11,12,8,12,13,9,13,14,10,14,15,11,15,16,12, 16,17,13,17,18,14,18,19,15,19,20,16,20,21,17,21, 22,18,22,23,19,23,24,20,24,25,21,25,26,22,26,27, 23,27,28,24,28,29,25,29,30]