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Matches any run of one or more word characters (letters, digits, underscore) ending with the letter 'c' at a word boundary, such as 'music', 'magic', or 'logic'. Because there is no boundary anchor at the start, it can also match the tail portion of longer strings. Commonly used to find or filter words ending in 'c' in text processing, validation, or search-and-replace tasks. The global flag finds all occurrences, while the multiline flag has no effect since no line anchors are present.