C31231211113311331323133313331333133313331333133313113313223231   >>    C3123121111331133132313331333133313331333133313331311331322323   <<    C31231211113311331323133313331333133313331333133313113313223233   >>      C31231211113311331323133313331333133313331333133313113313223232   >>