Create a stop character
/as filter map '3' stop
Stop characters allow you to search for profanity inside of another string. The text being sent is separated into works along the stops. The space character is always a stop. Other characters can be configured to be stops or not. If someone was advertising a URL and you wanted to search for both www.foo.com and http://www.foo.com you could map / as a stop and www.foo.com would be seen as the filtered word.