C31231211111133131211113313331333132233131211111211113313223313113322321   >>    C3123121111113313121111331333133313223313121111121111331322331311332232   <<    C31231211111133131211113313331333132233131211111211113313223313113322323   >>      C31231211111133131211113313331333132233131211111211113313223313113322322   >>