).equals(a1) &amp;&amp; stringVertexMap.get(&quot;b&quot;).equals(b2);</b>
&nbsp;            }
<b class="nc">&nbsp;            if (!found3) {</b>
<b class="nc">&nbsp;                found3 = stringVertexMap.get(&quot;a&quot;).equals(a2) &amp;&amp; stringVertexMap.get(&quot;b&quot;).equals(b1);</b>
&nbsp;            }
<b class="nc">&nbsp;            if (!found4) {</b>
<b class="nc">&nbsp;                found4 = stringVertexMap.get(&quot;a&quot;).equals(a2) &amp;&amp; stringVertexMap.get(&quot;b&quot;).equal