C312312111133131121333133313113313331333133313331333121111331323223313111   >>    C31231211113313112133313331311331333133313331333133312111133132322331311   <<    C312312111133131121333133313113313331333133313331333121111331323223313113   >>      C312312111133131121333133313113313331333133313331333121111331323223313112   >>