C31231211111133131211113313331333133313332233133313331331122232321331   >>    C3123121111113313121111331333133313331333223313331333133112223232133   <<    C31231211111133131211113313331333133313332233133313331331122232321333   >>      C31231211111133131211113313331333133313332233133313331331122232321332   >>