The base 22 is in the form of a hollow body 26, and {HEAD ~ the anvils} 24 are operatively positioned within {TAIL ~ the hollow interior} of the base body 26 
are operatively positioned within
The base 22 is in the form of a hollow body 26 , and { HEAD ~ the anvils } 24 are operatively positioned within { TAIL ~ the hollow interior } of the base body 26
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH