C11111333133313232233133313331333132313331323321313331333132332321121   >>    C1111133313331323223313331333133313231333132332131333133313233232112   <<    C11111333133313232233133313331333132313331323321313331333132332321123   >>      C11111333133313232233133313331333132313331323321313331333132332321122   >>