output"><span class="identifier">b</span></code>.
        This is a bit of a deviation from the usual EBNF interpretation where you
        simply match <code class="computeroutput"><span class="identifier">a</span></code> <span class="bold"><strong>or</strong></span> <code class="computeroutput"><span class="identifier">b</span></code>.
        Here's the syntax diagram:
      </p>
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