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