@Q:
  FOR v, e, p IN <span class="hljs-number">2.</span><span class="hljs-number">.2</span> OUTBOUND <span class="hljs-string">"mps_verts/A"</span> mps_edges
     FILTER v._id == <span class="hljs-string">"mps_verts/C"</span>
       RETURN CONCAT_SEPARATOR(<span class="hljs-string">" -&gt; "</span>, p.vertices[*]._key)

@R
[
  <span class="hljs-string">"A -&gt; B -&gt; C"</span>,
  <span class="hljs-string">"A -&gt; D -&gt; C"</span>
]