MarkLogic: Getting xpath of an element using xquery

I am trying to find the xpath of every element in an xml and put it up as the element value. My source file would look like :

<root>
<parent1>
  <child1></child1>
  <child2></child2>
</parent1>

<parent2>
  <child1></child1>
</parent2>
</root>

I wanted an output like:

<root>
<parent1>
  <child1> /root/parent1/child1 </child1>
  <child2> /root/parent1/child2 </child2>
</parent1>

<parent2>
  <child1> /root/parent2/child1 </child1>
</parent2>
</root>

I am currently getting an output as:

<root>
<parent1>
 <child1> /root/parent1/child1 </child1>
 <child2> /root/parent1/child2 </child2>
 </parent1>"

 <parent2>
 <child1> /root/parent1/parent2/child1 </child1>
 </parent2>
 </root>

I am unable to traverse properly to find the xpath. Any input would be valuable.