[2,3,4,4,4,5,6,6,6,6,6,7,8,8,8,8,8,8,8,9,10,10,10, 10,10,10,10,10,10,11,12,12,12,12,12,12,12,12,12, 12,12,13,14,14,14,14,14,14,14,14,14,14,14,14,14, 15,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, 17,18,18,18,18]