In the book Am where does david travel to in order from first place last theres supposed be over 28 places PLEASE HELP?

David travels to the following places in the book of Am:

1. Gilgal

2. Mizpeh

3. Shiloh

4. Jerusalem

5. Hebron

6. Ziklag

7. Gath

8. Aphek

9. Jezreel

10. Shunem

11. Endor

12. Geba

13. Ramah

14. Gibeah

15. Bethel

16. Ai

17. Jericho

18. Gilgal (again)

19. Bethlehem

20. Tekoa

21. Ziph

22. Maon

23. Carmel

24. Brook of Besor

25. Ziklag (again)

26. Hebron (again)

27. Jerusalem (again)

28. Mahanaim