A number of strategies have been devised to modify reactor conditions in order to prevent {HEAD ~ the occurrence} of {TAIL ~ a decomp} in the reactor 
A number of strategies have been devised to modify reactor conditions in order to prevent { HEAD ~ the occurrence } of { TAIL ~ a decomp } in the reactor
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 TAIL OTH OTH OTH