C11111333133313232233133313331333133313331311331333132233133313331121   >>    C1111133313331323223313331333133313331333131133133313223313331333112   <<    C11111333133313232233133313331333133313331311331333132233133313331123   >>      C11111333133313232233133313331333133313331311331333132233133313331122   >>