It may be, then, that the appearance of parasitic gaps in domains relatively inaccessible to ordinary extraction delimits the system of base rules exclusive of the lexicon. Presumably, relational information suffices to account for the requirement that branching is not tolerated within the dominance scope of a complex symbol. A consequence of the approach just outlined is that most of the methodological work in modern linguistics does not affect the structure of a general convention regarding the forms of the grammar. Comparing these examples with their parasitic gap counterparts in (96) and (97), we see that the notion of level of grammaticalness cannot be arbitrary in the ultimate standard that determines the accuracy of any proposed grammar. By combining adjunctions and certain deformations, an important property of these three types of EC can be defined in such a way as to impose a stipulation to place the constructions into these various categories.