Why a fast word finder does not need to generate every permutation.
An efficient unscrambler compares letter-frequency maps. Each dictionary word is accepted only when the input contains enough of every required letter. Length, starting-letter and pattern filters reduce the search space further.
The search engine uses a prebuilt word index and compares exact letter counts. A letter is never used more often than entered.
Learn how word scrambles work, which versions are common and how to turn mixed letters into valid words faster.
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