C21231322221311331311211312111133132313223313331323132323213232231   >>    C2123132222131133131121131211113313231322331333132313232321323223   <<    C21231322221311331311211312111133132313223313331323132323213232233   >>      C21231322221311331311211312111133132313223313331323132323213232232   >>