C31231211111133131211113313331333132233133313331311331323122321   >>    C3123121111113313121111331333133313223313331333131133132312232   <<    C31231211111133131211113313331333132233133313331311331323122323   >>      C31231211111133131211113313331333132233133313331311331323122322   >>