C31231211111133131211113313331333132233131211111211113312111133132233121   >>    C3123121111113313121111331333133313223313121111121111331211113313223312   <<    C31231211111133131211113313331333132233131211111211113312111133132233123   >>      C31231211111133131211113313331333132233131211111211113312111133132233122   >>