5. Everything in terms of x
Disc
Everything in terms of x

6. Everything in terms of x
Disc
Everything in terms of x

7. Everything in terms of y
Shell
Everything in terms of y

8. Everything in terms of x
Shell
Everything in terms of x

9. Everything in terms of x
Shell
Everything in terms of x

10. Everything in terms of y
Disc
Everything in terms of y

11. Everything in terms of x
Shell
Everything in terms of x

12. Everything in terms of x
Shell
Everything in terms of x

13. Everything in terms of x
Shell
Everything in terms of x

14. Everything in terms of x
Shell
Everything in terms of x

15. Everything in terms of y
Disc
Everything in terms of y

18. Everything in terms of x
Disc
Everything in terms of x

20. Disc

23. Everything in terms of y
Disc
Everything in terms of y

25. Everything in terms of x
Shell
Everything in terms of x

26. Everything in terms of x
Disc
Everything in terms of x

28. Everything in terms of x
Disc
Everything in terms of x

31. Everything in terms of x
Disc
Everything in terms of x