Would anyone want to little help me?

Hi guys. I still try to learn English. And I have a small question again. Will you help me? I'm interesting in reduction in some important English words. I made this list. Is it true? Did I do mistake? Didn't I forget anything?
  1. I am = I’m –>I am not = I’m not
  2. is = ’s -> is not = ’s not = isn’t
  3. are = ‘re -> are not = ‘re not = aren’t
  4. was -> was not = wasn’t
  5. were -> were not = weren’t
  6. do -> do not = don’t
  7. does -> does not = doesn’t
  8. did -> did not = didn’t
  9. will = ’ll -> will not = ’ll not = won’t
  10. shall -> shall not = shan’t
  11. have = ’ve -> have not = ‘ve not = haven’t
  12. has = ‘s -> has not = ‘s not = hasn’t
  13. had = ‘d -> had not = ‘d not = hadn’t
  14. should -> should not = shouldn’t
  15. could -> could not = couldn’t
  16. would = ‘d -> would not = ‘d not = wouldn’t
  17. must -> must not = mustn’t
  18. can -> cannot = can’t
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