C123132112322333121111113121111331333133313331322322331223221213112121   >>    C12313211232233312111111312111133133313331333132232233122322121311212   <<    C123132112322333121111113121111331333133313331322322331223221213112123   >>      C123132112322333121111113121111331333133313331322322331223221213112122   >>