{HEAD ~ The present invention} solves {TAIL ~ several issues} related to firearm and related projectile practice, competition, and training 
solves
{ HEAD ~ The present invention } solves { TAIL ~ several issues } related to firearm and related projectile practice , competition , and training
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH