C11111333133313232233133313331333132313331323321313331333131133133313113311231   >>    C1111133313331323223313331333133313231333132332131333133313113313331311331123   <<    C11111333133313232233133313331333132313331323321313331333131133133313113311233   >>      C11111333133313232233133313331333132313331323321313331333131133133313113311232   >>