C21231322221311331311211312111133132313223313331322133313221311211   >>    C2123132222131133131121131211113313231322331333132213331322131121   <<    C21231322221311331311211312111133132313223313331322133313221311213   >>      C21231322221311331311211312111133132313223313331322133313221311212   >>