[2,3,2,3,3,4,4,5,2,3,5,5,6,4,7,5,7,5,8,3,4,5,9,6,12,6,5,7,3,7,4,5,5,7,15,5,12,8,6,8,7,4,6,7,7,9,10,6,8,12,7,10,16,5,16,13,8,10,9,7,16,10,5,5,8,10,20,16,4,6,18,12,14,13,7,6,9,11]