Comma codes are codes with a common suffix that acts as a delimiter.
A comma code of length n has n + 1 possible codes.

For example, comma codes with the delimiter of 0:

  • 0
  • 10
  • 110
  • 1110
  • 1111

We can simply assign each comma code to a source message.
i.e. s1 s2 s3 s4 s5