<p><a href="https://en.wikipedia.org/wiki/Permutation" class="extiw" title="w:Permutation">Permutations</a> of 4 elements (in lexicographic order) and derived permutations with repetition
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<ul><li><a href="//commons.wikimedia.org/wiki/File:Permutations_with_repetition.svg" title="File:Permutations with repetition.svg">Permutations with repetition.svg</a>:</li></ul><table><tbody><tr><td style="padding: 15px;"><a href="//commons.wikimedia.org/wiki/File:Watchduck.svg" class="image"><img alt="Watchduck.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/40px-Watchduck.svg.png" decoding="async" width="40" height="46" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/60px-Watchduck.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/80px-Watchduck.svg.png 2x" data-file-width="703" data-file-height="806"></a>
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<td><a href="//commons.wikimedia.org/wiki/User:Watchduck" title="User:Watchduck">Watchduck</a><br><span style="color: gray; font-size: 80%;">You can name the author as "T. Piesk", "Tilman Piesk" or "Watchduck".</span>
</td></tr></tbody></table><ul><li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Quartl" title="User:Quartl">Quartl</a></li></ul>
2012-12-30 09:46
This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Permutations_with_repetition.svg" title="File:Permutations with repetition.svg">Permutations with repetition.svg</a>: <a href="//commons.wikimedia.org/wiki/File:Permutations_with_repetition.svg" class="image"><img alt="Permutations with repetition.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Permutations_with_repetition.svg/50px-Permutations_with_repetition.svg.png" decoding="async" width="50" height="88" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Permutations_with_repetition.svg/75px-Permutations_with_repetition.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Permutations_with_repetition.svg/100px-Permutations_with_repetition.svg.png 2x" data-file-width="836" data-file-height="1467"></a><br>