C21231322221311331311211312111133132313223313331322121111131133132232321   >>    C2123132222131133131121131211113313231322331333132212111113113313223232   <<    C21231322221311331311211312111133132313223313331322121111131133132232323   >>      C21231322221311331311211312111133132313223313331322121111131133132232322   >>