1. Are there still categories left?
   1. Yes
      1. Is this the lft anchor?
         1. Yes
            1. If lft anchor == 1
            2. Yes
            3. Valid
            4. Init Variables
            5. No
            6. Invalid!
            7. Add info to corrections array
            8. Init Variables
            9. If rgt anchor == count(categories) * 2
            10. Yes
            11. Valid
            12. Init Variables
            13. No
            14. Invalid!
            15. Add info to corrections array
            16. Init Variables
         2. No
            1. Is this a child node?
            2. Yes
            3. This is a child
            4. If index >= lft
            5. Yes
            6. Invalid!
            7. lft = index + 1
            8. rgt = index + 2
            9. No
            10. while index < lft
            11. If lft == index + 1
            12. Yes
            13. If rgt == index + 2
            14. Yes
            15. Valid
            16. index += 2
            17. No
            18. Invalid!
            19. Add info to corrections array
            20. index += 2
            21. No
            22. If empty(stack)
            23. Yes
            24. Invalid!
            25. Add info to corrections array
            26. lft = index + 1
            27. No
            28. If end(stack) == index + 1
            29. Yes
            30. Valid
            31. Pop rgt off of stack
            32. index++
            33. No
            34. Invalid!
            35. Add info to corrections array
            36. lft = index + 1
            37. No
            38. This is a parent
            39. If index >= lft
            40. Yes
            41. Invalid!
            42. lft = index + 1
            43. No
            44. while index < lft
            45. If lft == index + 1
            46. Yes
            47. Push rgt onto stack
            48. index++
            49. No
            50. If empty(stack)
            51. Yes
            52. Invalid!
            53. Add info to corrections array
            54. lft = index + 1
            55. No
            56. If end(stack) == index + 1
            57. Yes
            58. Valid
            59. Pop rgt off of stack
            60. index++
            61. No
            62. Invalid!
            63. Add info to corrections array
            64. lft = index + 1
   2. No
      1. While index < end
         1. If index == end - 1
            1. Yes
            2. End!
            3. No
            4. If empty(stack)
            5. Yes
            6. Invalid!
            7. Add info to corrections array
            8. index++
            9. No
            10. If end(stack) == index + 1
            11. Yes
            12. Valid
            13. Pop rgt off of stack
            14. index++
            15. No
            16. Invalid!
            17. Pop rgt off of stack
            18. Add info to corrections array
            19. index++