C21231322221311331311211312111133132313223313331333112113313232321321   >>    C2123132222131133131121131211113313231322331333133311211331323232132   <<    C21231322221311331311211312111133132313223313331333112113313232321323   >>      C21231322221311331311211312111133132313223313331333112113313232321322   >>