    USA         NA    0.7328820          NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 6   &lt;NA&gt;       IND         NA    0.8746007          NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 7      3      &lt;NA&gt;         NA           NA 0.497777389</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 8      4      &lt;NA&gt;         NA           NA 0.289767245</span>
<span class="r-in"><span><span class="fu">auto_merge</span><span class="op">(</span><span cl