	><span class="hs-identifier hs-type"
	  >Plugh</span
	  ></a
	></span
      ><span
      > </span
      ><span class="annot"
      ><span class="hs-identifier hs-type"
	>Either</span
	></span
      ><span
      > </span
      ><span class="hs-keyword"
      >where</span
      ><span
      >
</span
      ><span id="line-36"
      ></span
      ><span
      >    </span
      ><span id=""
      ><span class="annot"
	><span class="annottext"
	  >plugh :: forall a b. Either a a -&gt; Either b b -&gt; Either (a 