0
9
1
7
1
1
7
0
0
9
1
7
8
9
1
0
0
1
1
8
7
9
7
7
7
1
9
0
1
0
7
8
8
9
9
7
8
8
9
1
8
0
0
8
8
8
0
7
9
9