The relationships between fans of football clubs in Poland can be fourfold: neutrality, friendship (zgoda), enmity (kosa), or pact (układ). The belief that there are two disjoint blocs gathered around The Great Triad (Arka, Cracovia, and Lech) and Three Kings of Great Cities (Śląsk, Wisła, and Lechia) is false. Here is the largest connected component of the graph of friendships.
The graph of enmities would be less clear. For instance, Cracovia has friendships with Tarnovia and Sandecja but Tarnovia and Sandecja are enemies. Or GKS, Górnik, Ruch, and Zagłębie: every two of them are enemies.