{HEAD ~ The water} used to make up {TAIL ~ the alkaline solution} can either be supplied from an external source or in part or in total from water produced with the oil 
used to make up
{ HEAD ~ The water } used to make up { TAIL ~ the alkaline solution } can either be supplied from an external source or in part or in total from water produced with the oil
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH