{HEAD ~ a length} of {TAIL ~ roving}, comprising a bundle of flexible filaments and including: 
of
{ HEAD ~ a length } of { TAIL ~ roving } , comprising a bundle of flexible filaments and including :
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH