I would like to give some feedback about ...

From: http://www.checkio.org/mission/friends/solve/

I have a test failed. It says:

""" Your result: True

Right result: True

f = Friends([{"And", "Or"}, {"For", "And"}]) f.add({"Or", "And"}) """

HTTP_USER_AGENT:

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.91 Safari/537.36