C21231322221311331311211312111133132313223313331322331311331333133323313221   >>    C2123132222131133131121131211113313231322331333132233131133133313332331322   <<    C21231322221311331311211312111133132313223313331322331311331333133323313223   >>      C21231322221311331311211312111133132313223313331322331311331333133323313222   >>