Further object is to provide {HEAD ~ a covered button} of {TAIL ~ the aforesaid type} which can be easily assembled 
Further object is to provide { HEAD ~ a covered button } of { TAIL ~ the aforesaid type } which can be easily assembled
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH