C123132112322333121111113121111331333133313231333231323233221323221121   >>    C12313211232233312111111312111133133313331323133323132323322132322112   <<    C123132112322333121111113121111331333133313231333231323233221323221123   >>      C123132112322333121111113121111331333133313231333231323233221323221122   >>