2
1
1
4
1
0
1
0
2
1
0
6
4
9
5
4
3
8
2
7
8
0
1
3
9
8
7
8
4
0
9
0
6
4
8
5
0
5
2
0
2
7
6
1
0
7
8
2
2
7
0
5
2
4
7
5
4
6
0
2