C1111133313331323223313331333133313231333132332131333131121133131323111   >>    C111113331333132322331333133313331323133313233213133313112113313132311   <<    C1111133313331323223313331333133313231333132332131333131121133131323113   >>      C1111133313331323223313331333133313231333132332131333131121133131323112   >>