C21231322221311331311211312111133132313223313331323223331333131221   >>    C2123132222131133131121131211113313231322331333132322333133313122   <<    C21231322221311331311211312111133132313223313331323223331333131223   >>      C21231322221311331311211312111133132313223313331323223331333131222   >>