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