C31231211111133131211113313331333133313332233132313331322133313122321321   >>    C3123121111113313121111331333133313331333223313231333132213331312232132   <<    C31231211111133131211113313331333133313332233132313331322133313122321323   >>      C31231211111133131211113313331333133313332233132313331322133313122321322   >>