Class 4B

1-1

1-2

1-3

2-1

2-2

2-3

2-4

3-1

3-2

4-1

4-2

4-3

5-1

5-2

5-3

6-1

6-2

7-1

7-2

8-1

8-2

9-1

10-1

10-2

11-1

11-2

12-1

12-2

12-3

13-1

14-1

14-2

14-3

15-1

15-2

15-3

16-1

16-2

17-1

18-1

18-2

19-1

19-2

20-1

20-2

21-1

22-2

22-3

16-3