Hints for the Challenge:

Below, you can find another hint for the Challenge.

You should only get here after reading, digesting, and applying the .

Hint

Single characters cannot be used as markers. Why would multiple character sequences work? Consider a two-character sequence starting with some character c. How do we now express that character c? Well, using another two-character code. There are plenty of two-character sequences.

A choice that is often made, is to use cc as code for c. And other combinations cx can be used for other purposes.

Character c is then called an escape character, because it indicates that the next characters should be treated in a special way.

Can you apply this idea?

Try your program in the machine, and see if you can extend it to an improved solution.

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