The barrier member can have a construction that is flexible in both directions along the length and {HEAD ~ width} of {TAIL ~ the barrier member} 
The barrier member can have a construction that is flexible in both directions along the length and { HEAD ~ width } of { TAIL ~ the barrier member }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL