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