C31231211111133131211113313331333132233131211111211113313223321   >>    C3123121111113313121111331333133313223313121111121111331322332   <<    C31231211111133131211113313331333132233131211111211113313223323   >>      C31231211111133131211113313331333132233131211111211113313223322   >>