C1111133313331323223313331333133313231333132332131333133313113121111133312321   >>    C111113331333132322331333133313331323133313233213133313331311312111113331232   <<    C1111133313331323223313331333133313231333132332131333133313113121111133312323   >>      C1111133313331323223313331333133313231333132332131333133313113121111133312322   >>