1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
4
5
5
5
5
6
7
8
8
8
9
9
9
9
9
9
B
B
B
B
B
C
C
C
C
C
C
D
D
E
E
E
E
E
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F