C123132112322333121111113121111331333133313233213123132211312121   >>    C12313211232233312111111312111133133313331323321312313221131212   <<    C123132112322333121111113121111331333133313233213123132211312123   >>      C123132112322333121111113121111331333133313233213123132211312122   >>