The loops of the loop regions will be pulled out under constant use unless {HEAD ~ the back} of regions are coated by {TAIL ~ an adhesive} 
are coated by
The loops of the loop regions will be pulled out under constant use unless { HEAD ~ the back } of regions are coated by { TAIL ~ an adhesive }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL