C11112331312111112111133133313231333132313232113313231322123121   >>    C1111233131211111211113313331323133313231323211331323132212312   <<    C11112331312111112111133133313231333132313232113313231322123123   >>      C11112331312111112111133133313231333132313232113313231322123122   >>