ss="mdzsyn-coresym">*</span> <span class="mdzsyn-string">"b"</span> (<span class="mdzsyn-coresym">+</span> <span class="mdzsyn-keyword">:a</span> <span class="mdzsyn-number">0</span>) <span class="mdzsyn-string">"b"</span>)
   <span class="mdzsyn-keyword">:main</span> (<span class="mdzsyn-coresym">*</span> <span class="mdzsyn-string">"("</span> <span class="mdzsyn-keyword">:b</span> <span class="mdzsyn-string">")"</span>)})

(<span class="mdzsyn-coresym">peg/match</span> <span class="mdzsyn-symbol">my-gramm