<Parse> ::= <Command> <Parse> | <Command>

 <Command> ::= <DirectionCommand> |
               <WriteCommand> |
               <ColorCommand> |
               <RepCommand>

 <DirectionCommand> ::= FORW NUM DOT | BACK NUM DOT | RIGHT NUM DOT | LEFT NUM DOT

 <WriteCommand> ::= UP DOT | DOWN DOT

 <ColorCommand> ::= COLOR HEX DOT

 -<RepCommand> ::= REP NUM <Command> | REP NUM <QuoteCommand> { <Command> } <QuoteCommand>

 -<QuoteCommand> ::= QUOTE

+<RepCommand> ::= REP NUM <QuoteCommand>
+<QuoteCommand> ::= <Command> | QUOTE
+<QuoteEnd> ::= <Command> <QuoteEnd> | <Command> QUOTE