C31231211111133131211113313331333133313332233132313331313331322133311233121   >>    C3123121111113313121111331333133313331333223313231333131333132213331123312   <<    C31231211111133131211113313331333133313332233132313331313331322133311233123   >>      C31231211111133131211113313331333133313332233132313331313331322133311233122   >>