C123132112322333121111113121111331333133313231333133311223323211231221111122111   >>    C12313211232233312111111312111133133313331323133313331122332321123122111112211   <<    C123132112322333121111113121111331333133313231333133311223323211231221111122113   >>      C123132112322333121111113121111331333133313231333133311223323211231221111122112   >>