C31231211111133131211113313331333133112111133132233131121322311   >>    C3123121111113313121111331333133313311211113313223313112132231   <<    C31231211111133131211113313331333133112111133132233131121322313   >>      C31231211111133131211113313331333133112111133132233131121322312   >>