-pr">#&gt;</span> [1] NA</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $key</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "c"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $time</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "4/4"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r