1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
4
6
6
7
7
7
9
9
9
9
9
9
A
A
A
A
B
C
D
D
D
E
E
E
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F