C11112331312111112111133133313331323132313232233133313231331123121122211   >>    C1111233131211111211113313331333132313231323223313331323133112312112221   <<    C11112331312111112111133133313331323132313232233133313231331123121122213   >>      C11112331312111112111133133313331323132313232233133313231331123121122212   >>