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@theducks, you know, now that I think about it some more, I'm wondering if the upper range on the quantifier is necessary at all. Since there are no other permitted characters (including spaces)—except potentially "Chapter"—and I don't think there are any words that are composed exclusively of any combination of those 5 letters and that wouldn't already be capture by the existing {1,8} range (e.g. "ILL" or "CIVIL"), it seems the quantifier isn't actually limiting any false positives that {1,} would erroneously include.
What do you think?
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