anchor.diff:      | PRIOR
       | PRIVILEGES
       | PUBLIC
  +    | R
       | RANGE
       | RANK
       | RAW
  
positive.code:     | GROUPING
      | GROUPING_ID
      | HASH
      | IMPERSONATE
      | INSENSITIVE
      | INSERTED
  
negative.code: simple_id
      : ID
      | ABSOLUTE
      | ACTION
      | ACTIVE
      | ADDRESS
      | APPLY
  