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