1
1
1
1
1
1
1
1
1
1
1
1
3
3
4
7
8
9
A
B
B
E
E
E
E
E
E
E
E
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F