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