C2122121212121133131323331313113313233313231322331323133313331121   >>    C212212121212113313132333131311331323331323132233132313331333112   <<    C2122121212121133131323331313113313233313231322331323133313331123   >>      C2122121212121133131323331313113313233313231322331323133313331122   >>