C123132112322333121111113121111331333133313231333133311223323212231212213131   >>    C12313211232233312111111312111133133313331323133313331122332321223121221313   <<    C123132112322333121111113121111331333133313231333133311223323212231212213133   >>      C123132112322333121111113121111331333133313231333133311223323212231212213132   >>