C21231322221311331311211312111133132313223313331323232132311321   >>    C2123132222131133131121131211113313231322331333132323213231132   <<    C21231322221311331311211312111133132313223313331323232132311323   >>      C21231322221311331311211312111133132313223313331323232132311322   >>