{HEAD ~ The present invention} relates to {TAIL ~ golf swing training devices}, and includes swing training devices that can be used during practice, during play, or both 
relates to
{ HEAD ~ The present invention } relates to { TAIL ~ golf swing training devices } , and includes swing training devices that can be used during practice , during play , or both
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL 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