In the present case, {HEAD ~ the fastening region} 4 is of {TAIL ~ a three dimensional design} 
is of
In the present case , { HEAD ~ the fastening region } 4 is of { TAIL ~ a three dimensional design }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL