{TAIL ~ The barrier} may be made of {HEAD ~ rigid material}, for example, constructed from a plurality of sectors but is preferably made from a flexible material so that it can be fitted around an existing conventional insulator 
{ TAIL ~ The barrier } may be made of { HEAD ~ rigid material } , for example , constructed from a plurality of sectors but is preferably made from a flexible material so that it can be fitted around an existing conventional insulator
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH