This intermediary product can be further processed by direct exposure to carbonate solutions to form {HEAD ~ a second intermediary product} comprising {TAIL ~ carbon}, metal carbonate, and oxygen 
comprising
This intermediary product can be further processed by direct exposure to carbonate solutions to form { HEAD ~ a second intermediary product } comprising { TAIL ~ carbon } , metal carbonate , and oxygen
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH