Presumably, the theory of syntactic features developed earlier is, apparently, determined by the system of base rules exclusive of the lexicon. However, this assumption is not correct, since the notion of level of grammaticalness can be defined in such a way as to impose the strong generative capacity of the theory. By combining adjunctions and certain deformations, the earlier discussion of deviance delimits a corpus of utterance tokens upon which conformity has been defined by the paired utterance test. Furthermore, an important property of these three types of EC may remedy and, at the same time, eliminate problems of phonemic and morphological analysis. This suggests that a subset of English sentences interesting on quite independent grounds does not affect the structure of irrelevant intervening contexts in selectional rules.
see also: WikiPedia -- Chomskybot