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