{HEAD ~ a tether} passing through {TAIL ~ the stitched loops} to facilitate application of tension to the apparatus 
passing through
{ HEAD ~ a tether } passing through { TAIL ~ the stitched loops } to facilitate application of tension to the apparatus
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH