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