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This paper describes an approach to providing lexical information for
natural language processing in unrestricted domains. A system of
approximately 1200 morphological rules is used to extend a core lexicon
of 39,000 words to provide lexical coverage that exceeds that of a
lexicon of 80,000 words or 150,000 word forms. The morphological system
is described, and lexical coverage is evaluated for random words chosen
from a previously unanalyzed corpus.
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