Abstract
The abstract structure of paradigms reflects the requirements of syntax. This implies regularity across the lexicon. How then can the structure of a paradigm (rather than particular forms) be lexicalized? There are possible instances of this in Slavonic, which we discuss both for their inherent interest and for their relevance to the more general issue of the syntax-morphology interface. Our approach relies heavily on the notion of default, and is within the Network Morphology framework (Corbett & Fraser 1993, Evans, Brown & Corbett 2002, Brown & Hippisley 2012). In this paper the emphasis is on the interesting conceptual issues, rather than on the formalism.