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