The 4 different <a rel="nofollow" class="external text" href="http://oeis.org/wiki/Orderings">orderings</a> of the 3-element subsets of a 6-element set
<p>Only the colex order allows an infinite list and enumeration of all 3-element subsets (independent of the number of elements to choose from; compare <span style="white-space:nowrap"><a href="https://en.wikipedia.org/wiki/On-Line_Encyclopedia_of_Integer_Sequences" title="Sloane's"><img alt="Sloane's" src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/OEISicon_light.svg/11px-OEISicon_light.svg.png" decoding="async" width="11" height="15" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/OEISicon_light.svg/17px-OEISicon_light.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/OEISicon_light.svg/22px-OEISicon_light.svg.png 2x" data-file-width="409" data-file-height="556"></a> <a href="//oeis.org/A014311" class="extiw" title="oeis:A014311">A014311</a></span>).<br></p>
This file on <a rel="nofollow" class="external text" href="http://oeis.org/wiki/Main_Page">OEIS Wiki</a>: <a rel="nofollow" class="external text" href="http://oeis.org/wiki/File:Orderings;_6_choose_3.svg">File:Orderings;_6_choose_3.svg</a>
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