a-language="janet">(<span class="mdzsyn-coresym">loop</span> [[<span class="mdzsyn-symbol">letter</span> <span class="mdzsyn-symbol">word</span>] <span class="mdzsyn-keyword">:in</span> (<span class="mdzsyn-coresym">pairs</span> <span class="mdzsyn-symbol">alphabook</span>)]
  (<span class="mdzsyn-coresym">print</span> <span class="mdzsyn-symbol">letter</span> <span class="mdzsyn-string">" is for "</span> <span class="mdzsyn-symbol">word</span>))

(<span class="mdzsyn-coresym">loop</span> [<span class="mdzs