C31231211111133131211113313231333133313331333121111331322332211   >>    C3123121111113313121111331323133313331333133312111133132233221   <<    C31231211111133131211113313231333133313331333121111331322332213   >>      C31231211111133131211113313231333133313331333121111331322332212   >>