1
D
A
B
C
2
D
A
B
C
3
D
A
B
C
4
D
A
B
C
5
D
A
B
C
6
D
A
B
C
7
D
A
B
C
8
D
A
B
C
9
D
A
B
C
10
D
A
B
C
11
D
A
B
C
12
D
A
B
C
13
D
A
B
C
14
D
A
B
C
15
D
A
B
C
16
D
A
B
C
17
D
A
B
C
18
D
A
B
C
19
D
A
B
C
20
D
A
B
C
21
D
A
B
C
22
D
A
B
C