We'ĺl have to add numbers so we know whether it is c-word #1, c-word #2, or c-word #3.
Or like the BBC warning in Monty Python's naughty chemist sketch: We do not use words like b_m, b_tty, w__-w__, kn_ckers, kn_ckers, or Semprini.
So how did they write the rule?
Did they literally spell out the words to ensure clarity in the rule? If so, if someone asks for a reading of the rule would the council-person who reads it be banned?
If the rule only refers to the words as “N-word” and “C-word” those designations do not clearly and precisely state exactly what words are forbidden. Thus opening them up to issues of someone decides the “C-word” is Coon or Cracker, not Country Under Natural Trajectory.