The yarn is fed through a hole in {HEAD ~ the wall} of {TAIL ~ the tube} from a groove on the outer surface 
of
The yarn is fed through a hole in { HEAD ~ the wall } of { TAIL ~ the tube } from a groove on the outer surface
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH