1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
4
4
4
5
5
6
6
7
7
A
A
B
B
B
B
B
D
D
E
E
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F