Slideable over {HEAD ~ hollow closed end needle} 10 is {TAIL ~ a fastenable stopper} 26 
is
Slideable over { HEAD ~ hollow closed end needle } 10 is { TAIL ~ a fastenable stopper } 26
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH