1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
4
6
6
6
6
8
8
8
8
9
B
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