LIST
 FUNCTION
  IDENTIFIER (callMe)
  LIST
   IDENTIFIER (i)
  BLOCK
   LIST
    PRINTLN_STATEMENT
     LIST
      STRING_LITERAL ("i is now")
      IDENTIFIER (i)
 FUNCTION
  IDENTIFIER (main)
  LIST
   IDENTIFIER (start)
   IDENTIFIER (end)
  BLOCK
   LIST
    LOCAL_VARIABLE_DECLARATION
     LIST
      LOCAL_VARIABLE
       IDENTIFIER (counter)
       IDENTIFIER (start)
    WHILE_STATEMENT
     OPERATOR (<)
      IDENTIFIER (counter)
      IDENTIFIER (end)
     BLOCK
      LIST
       FUNCTION_CALL
        IDENTIFIER (callMe)
        LIST
         IDENTIFIER (counter)
       ASSIGNMENT_STATEMENT
        IDENTIFIER (counter)
        OPERATOR (+)
         IDENTIFIER (counter)
         NUMBER_LITERAL (1)
    WHILE_STATEMENT
     NUMBER_LITERAL (1)
     BLOCK
      LIST
       ASSIGNMENT_STATEMENT
        IDENTIFIER (counter)
        OPERATOR (-)
         IDENTIFIER (counter)
         NUMBER_LITERAL (1)
       IF_STATEMENT
        OPERATOR (<)
         IDENTIFIER (counter)
         IDENTIFIER (start)
        BREAK_STATEMENT
       FUNCTION_CALL
        IDENTIFIER (callMe)
        LIST
         IDENTIFIER (counter)