2 or more robots that appear to a referee to be working _________ may neither ______ nor _______ _____ any ______ ______ of ______ _______. Examples include _____ _______ ______ to all ______ _______, ________ all opponents to a _____ _____ of the _______, _________ all _______ to the ______ ________, and _______ all _______ to the _________.