[0,1,2,2,3,3,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,6,6, 6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,9,9,9, 9,9,9,10,10,10,10,10,10,11,11,11,11,11,11,11,11, 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, 12,12,12,12,12]