$ ./parser
----------------------------------------------------------------------->called init_aux() at line 348 from ../Shell/builtins/libstring.h
----------------------------------------------------------------------->called init_env() at line 327 from ../Shell/builtins/libstring.h
----------------------------------------------------------------------->called init_argX() at line 336 from ../Shell/builtins/libstring.h
root
sub_root
no code structures detected
no code structures detected
        production rule (type: instruction): rule1
                production segment (type: reference): rule1
                                sub_root '1' rule 1
                    production segment (type: binary   ): 1
                                rule 1 '2' rule 2
                    production segment (type: digit    ): 2
                                rule 2 '3' rule 3
                    production segment (type: digit    ): 3
                                rule 3 '5' rule 4
                    production segment (type: digit    ): 5
                                rule 4 '6' rule 5
                    production segment (type: digit    ): 6
        production rule (type: instruction): rule2
                production segment (type: reference): rule2
                                sub_root '1' rule 6
                    production segment (type: binary   ): 1
                                rule 6 '2' rule 7
                    production segment (type: digit    ): 2
                                rule 7 '4' rule 8
                    production segment (type: digit    ): 4
                                rule 8 '5' rule 9
                    production segment (type: digit    ): 5
                                rule 9 '6' rule 10
                    production segment (type: digit    ): 6