C11111333133313232233133313331333132313331323321313331333133313113313233113111   >>    C1111133313331323223313331333133313231333132332131333133313331311331323311311   <<    C11111333133313232233133313331333132313331323321313331333133313113313233113113   >>      C11111333133313232233133313331333132313331323321313331333133313113313233113112   >>