The method of the invention overcomes {HEAD ~ the problems} of manufacturing {TAIL ~ yarns} without requiring expensive and complicated mechanical elements 
of manufacturing
The method of the invention overcomes { HEAD ~ the problems } of manufacturing { TAIL ~ yarns } without requiring expensive and complicated mechanical elements
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH