{HEAD ~ A method} of recovering hydrocarbons from {TAIL ~ an underground hydrocarbon formation} penetrated by at least one injection well and at least one production well, which comprises: 
{ HEAD ~ A method } of recovering hydrocarbons from { TAIL ~ an underground hydrocarbon formation } penetrated by at least one injection well and at least one production well , which comprises :
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH