C123132112322333121111113121111331333133313231323113233221213323231   >>    C12313211232233312111111312111133133313331323132311323322121332323   <<    C123132112322333121111113121111331333133313231323113233221213323233   >>      C123132112322333121111113121111331333133313231323113233221213323232   >>