C1111133313331323223313331333133313231333132332131333133313232233131212212331   >>    C111113331333132322331333133313331323133313233213133313331323223313121221233   <<    C1111133313331323223313331333133313231333132332131333133313232233131212212333   >>      C1111133313331323223313331333133313231333132332131333133313232233131212212332   >>