C1111133313331323223313331333133313231333132332131333133313232233133313211121   >>    C111113331333132322331333133313331323133313233213133313331323223313331321112   <<    C1111133313331323223313331333133313231333132332131333133313232233133313211123   >>      C1111133313331323223313331333133313231333132332131333133313232233133313211122   >>