C1111133313331323223313331333133313331323321333132313232233112322311   >>    C111113331333132322331333133313331333132332133313231323223311232231   <<    C1111133313331323223313331333133313331323321333132313232233112322313   >>      C1111133313331323223313331333133313331323321333132313232233112322312   >>