C1111133313331323223313331333133313231333132332131333112113233311   >>    C111113331333132322331333133313331323133313233213133311211323331   <<    C1111133313331323223313331333133313231333132332131333112113233313   >>      C1111133313331323223313331333133313231333132332131333112113233312   >>