{TAIL ~ a projectile core} retained in {HEAD ~ said sabot} and having a front end; and 
{ TAIL ~ a projectile core } retained in { HEAD ~ said sabot } and having a front end ; and
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH