C21231322221311331311211312111133132313223313331323132322333132321   >>    C2123132222131133131121131211113313231322331333132313232233313232   <<    C21231322221311331311211312111133132313223313331323132322333132323   >>      C21231322221311331311211312111133132313223313331323132322333132322   >>