C11111333133313232233133313331333133313332322331331121111331311213331123212321   >>    C1111133313331323223313331333133313331333232233133112111133131121333112321232   <<    C11111333133313232233133313331333133313332322331331121111331311213331123212323   >>      C11111333133313232233133313331333133313332322331331121111331311213331123212322   >>