Non limiting examples include {HEAD ~ a string bed} for {TAIL ~ a tennis racquet} or racquetball racquet, a hammer head, or a blade or driver head at the end of a golf club 
for
Non limiting examples include { HEAD ~ a string bed } for { TAIL ~ a tennis racquet } or racquetball racquet , a hammer head , or a blade or driver head at the end of a golf club
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH