C21231322221311331311211312111133132313223313331322133313222332311   >>    C2123132222131133131121131211113313231322331333132213331322233231   <<    C21231322221311331311211312111133132313223313331322133313222332313   >>      C21231322221311331311211312111133132313223313331322133313222332312   >>