C31231211111133131211113313331333132233131211111211113313223313332321   >>    C3123121111113313121111331333133313223313121111121111331322331333232   <<    C31231211111133131211113313331333132233131211111211113313223313332323   >>      C31231211111133131211113313331333132233131211111211113313223313332322   >>