C21231322221311331311211312111133132313223313331322121111133313331333132231121   >>    C2123132222131133131121131211113313231322331333132212111113331333133313223112   <<    C21231322221311331311211312111133132313223313331322121111133313331333132231123   >>      C21231322221311331311211312111133132313223313331322121111133313331333132231122   >>