C1111233133313231133133313331333132313231333121111331311331311212233111   >>    C111123313331323113313331333133313231323133312111133131133131121223311   <<    C1111233133313231133133313331333132313231333121111331311331311212233113   >>      C1111233133313231133133313331333132313231333121111331311331311212233112   >>