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