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