C11112331312111112111133133313231333132313232233133313223313132233121   >>    C1111233131211111211113313331323133313231323223313331322331313223312   <<    C11112331312111112111133133313231333132313232233133313223313132233123   >>      C11112331312111112111133133313231333132313232233133313223313132233122   >>