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