[2,2,3,2,4,3,3,5,4,6,2,2,7,7,4,8,8,6,6,9,9,2,3,10, 5,6,6,5,11,8,3,12,12,5,3,13,13,13,5,6,6,14,14,10, 10,15,15,5,5,11,11,16,16,2,3,4,5,17,17,17,10,18, 18,18,18,13,13,19,19,19]