A further goal of {HEAD ~ the invention} is {TAIL ~ a device} to store the projectiles so that it is readily accessible for use and to allow each stored projectile to conveniently be charged by an external power supply 
is
A further goal of { HEAD ~ the invention } is { TAIL ~ a device } to store the projectiles so that it is readily accessible for use and to allow each stored projectile to conveniently be charged by an external power supply
OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH