[2,3,5,6,8,8,9,9,11,11,11,11,12,12,14,13,14,13,14, 14,13,14,15,15,14,15,15,16,14,15,15,16,16,17,16, 16,16,15,18,17,18,16,17,16,17,17,17,17,18,17,18, 18,17,18,17,19,19,17,19,18,20,18,18,19,18,19,19, 18,20,19,19,21]