Alternatively, {HEAD ~ the GO solution} can be just boiled for {TAIL ~ an extended period} of time to precipitate out the partially reduced GO 
boiled for
Alternatively , { HEAD ~ the GO solution } can be just boiled for { TAIL ~ an extended period } of time to precipitate out the partially reduced GO
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH