C1111133313331323223313331333133313331323132232113313113313113313232311   >>    C111113331333132322331333133313331333132313223211331311331311331323231   <<    C1111133313331323223313331333133313331323132232113313113313113313232313   >>      C1111133313331323223313331333133313331323132232113313113313113313232312   >>