C21231322221311331311211312111133132313223313331323223313331311132211   >>    C2123132222131133131121131211113313231322331333132322331333131113221   <<    C21231322221311331311211312111133132313223313331323223313331311132213   >>      C21231322221311331311211312111133132313223313331323223313331311132212   >>