C11112331312111112111133133313231333132313232233133313231333211121   >>    C1111233131211111211113313331323133313231323223313331323133321112   <<    C11112331312111112111133133313231333132313232233133313231333211123   >>      C11112331312111112111133133313231333132313232233133313231333211122   >>