{HEAD ~ These reactive precursors} can be cured using {TAIL ~ mechanisms} described above, typically in less than 45 minutes 
cured using
{ HEAD ~ These reactive precursors } can be cured using { TAIL ~ mechanisms } described above , typically in less than 45 minutes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH