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