The ironing ram and mold typically will be shaped to form a reentrant convex shape at {TAIL ~ the bottom} of {HEAD ~ the can} 
The ironing ram and mold typically will be shaped to form a reentrant convex shape at { TAIL ~ the bottom } of { HEAD ~ the can }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD