[1,2,1,3,2,3,1,4,2,4,3,4,1,5,2,5,3,5,4,5,1,6,2,6, 3,6,4,6,5,6,1,7,2,7,3,7,4,7,5,7,6,7,1,8,2,8,3,8,4, 8,5,8,6,8,7,8,1,9,2,9,3,9,4,9,5,9,6,9,7,9,8,9,1, 10,2,10,3,10,4,10,5,10,6,10,7,10,8,10,9,10,1,11,2, 11,3,11,4,11,5]