C123132112322333121111113121111331333133313231333133311223323212231213221221   >>    C12313211232233312111111312111133133313331323133313331122332321223121322122   <<    C123132112322333121111113121111331333133313231333133311223323212231213221223   >>      C123132112322333121111113121111331333133313231333133311223323212231213221222   >>