C21231322221311331311211312111133132313223313331323223313331311331322331211321   >>    C2123132222131133131121131211113313231322331333132322331333131133132233121132   <<    C21231322221311331311211312111133132313223313331323223313331311331322331211323   >>      C21231322221311331311211312111133132313223313331323223313331311331322331211322   >>