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Error patterns founded in a Korean document are syntactic ungrammaticality, violation of spacing rules, phonetic similarity, typing errors, ignorance of prescriptive rules. These errors are detected on collocation or anti-collocation information within a knowledge base which is made of error patterns. In this paper we suggest the constraint condition of an entry word or the anti collocation word to check the grammatical errors which are founded in a Korean document. We expand constraint condition scope to be able to process formal information, syntactic information, semantic information, morpheme information of a word, so as to make the grammar checker system be generalized in selection of an argument.