[0,1,2,3,3,4,5,5,6,6,7,7,7,7,6,8,9,9,10,10,11,11, 11,11,10,12,12,13,13,13,13,12,14,14,14,14,12,15, 15,15,15,14,15,15,14,15,13,15,14,13,12,16,17,17, 18,18,19,19,19,19,18,20,20,21,21,21,21,20,22,22, 22,22,20,23,23]