C123132112322333121111113121111331333133313231333133311223323211323123221323211   >>    C12313211232233312111111312111133133313331323133313331122332321132312322132321   <<    C123132112322333121111113121111331333133313231333133311223323211323123221323213   >>      C123132112322333121111113121111331333133313231333133311223323211323123221323212   >>