0,/
0,/
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,25,26,27,/
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,25,26,27,/
2,6,7,8,20,21,22,23,24,25,26,27,/
