C312312111111331312111133133313331333121111331333132233132232321   >>    C31231211111133131211113313331333133312111133133313223313223232   <<    C312312111111331312111133133313331333121111331333132233132232323   >>      C312312111111331312111133133313331333121111331333132233132232322   >>