In some embodiments, the systems, methods, and {HEAD ~ heaters} are used for treating {TAIL ~ a subsurface formation} 
are used for treating
In some embodiments , the systems , methods , and { HEAD ~ heaters } are used for treating { TAIL ~ a subsurface formation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL