C31231211111133131211113313331333132233133313331312111133132213231211   >>    C3123121111113313121111331333133313223313331333131211113313221323121   <<    C31231211111133131211113313331333132233133313331312111133132213231213   >>      C31231211111133131211113313331333132233133313331312111133132213231212   >>