For instance, the powder or powder blend may include a water swellable powder for blocking the migration of water along the assembly for effectively blocking {HEAD ~ the migration} of {TAIL ~ water} 
of
For instance , the powder or powder blend may include a water swellable powder for blocking the migration of water along the assembly for effectively blocking { HEAD ~ the migration } of { TAIL ~ water }
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 HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL