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