&gt; Rule 1: {f} -&gt; {b, d}</span></a>
<a class="sourceLine" id="cb8-26" data-line-number="26"><span class="co">#&gt; Rule 2: {e} -&gt; {b, d, f}</span></a>
<a class="sourceLine" id="cb8-27" data-line-number="27"><span class="co">#&gt; Rule 3: {d} -&gt; {b, f}</span></a>
<a class="sourceLine" id="cb8-28" data-line-number="28"><span class="co">#&gt; Rule 4: {c} -&gt; {a, b, d, f}</span></a>
<a class="sourceLine" id="cb8-29" data-line-number="29"><span class="co">#&gt; Rule 5: {a, b, d, f} -&gt; {c}</span><