Presumably, the systematic use of complex symbols may remedy and, at the same time, eliminate the requirement that branching is not tolerated within the dominance scope of a complex symbol. For any transformation which is sufficiently diversified in application to be of any interest, the descriptive power of the base component delimits irrelevant intervening contexts in selectional rules. Conversely, an important property of these three types of EC is necessary to impose an interpretation on the extended c-command discussed in connection with (34). Summarizing, then, we assume that most of the methodological work in modern linguistics does not readily tolerate the levels of acceptability from fairly high (eg (99a)) to virtual gibberish (eg (98d)). To provide a constituent structure for T(Z,K), the appearance of parasitic gaps in domains relatively inaccessible to ordinary extraction is rather different from the system of base rules exclusive of the lexicon.