C123132112322333121111113121111331333133313231333133311223323211231213131121221   >>    C12313211232233312111111312111133133313331323133313331122332321123121313112122   <<    C123132112322333121111113121111331333133313231333133311223323211231213131121223   >>      C123132112322333121111113121111331333133313231333133311223323211231213131121222   >>