C11112331312111112111133133313331323132313232233133313113313111111321311   >>    C1111233131211111211113313331333132313231323223313331311331311111132131   <<    C11112331312111112111133133313331323132313232233133313113313111111321313   >>      C11112331312111112111133133313331323132313232233133313113313111111321312   >>