How many English words can be formed form the word press and could you list them?

Some Words that can be made from 'newspaper' are:

1. a
2. an
3. answer
4. ape
5. are
6. asp
7. awe
8. ear
9. earn
10. ewe
11. nape
12. near
13. new
14. news
15. pan
16. pane
17. paper
18. pare
19. pear
20. peep
21. pen
22. prawn
23. prep
24. ran
25. rap
26. rasp
27. raw
28. reap
29. renew
30. sane
31. sap
32. saw
33. spar
34. spear
35. swan
36. swap
37. swear
38. sweep
39. wan
40. wane
41. war
42. ware
43. warn
44. warp
45. was
46. wasp
47. wean
48. wear
49. weep
50. wrap