C21231322221311331311211312111133132313223313331322331311331333112331323321   >>    C2123132222131133131121131211113313231322331333132233131133133311233132332   <<    C21231322221311331311211312111133132313223313331322331311331333112331323323   >>      C21231322221311331311211312111133132313223313331322331311331333112331323322   >>