C31231211111133131211113313331333133313332233133313331331121221311   >>    C3123121111113313121111331333133313331333223313331333133112122131   <<    C31231211111133131211113313331333133313332233133313331331121221313   >>      C31231211111133131211113313331333133313332233133313331331121221312   >>