C11111333133313232233133313331333132313331323321313331333132313233121311   >>    C1111133313331323223313331333133313231333132332131333133313231323312131   <<    C11111333133313232233133313331333132313331323321313331333132313233121313   >>      C11111333133313232233133313331333132313331323321313331333132313233121312   >>