{HEAD ~ The asphalt} cross linking agent blend comprises a second asphalt and {TAIL ~ at least one cross} linking agent 
{ HEAD ~ The asphalt } cross linking agent blend comprises a second asphalt and { TAIL ~ at least one cross } linking agent
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH