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