22,18,19,20,21,3,1,2,0,38,37,39,36,35,34,32,33,31,47,49,48,46,45,43,42,40,41,44,27,28,16,17,14,15,13,11,10,12,9,4,5,6,30,29,7,8,26,25,24,23