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