How this was checked. Korean text was extracted from 916 source pages across 22 editions. The old-format audit includes both sessions of every 25th-34th beginner paper. Image-only papers were OCR-read, and inflected forms were reduced to dictionary headwords before comparison. Personal names, answer labels, broken text fragments, and forms already represented by an existing headword were excluded. Paper and page references remain attached to every added entry.
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