For example, the mixture of {HEAD ~ propyne} and propadiene may have been obtained from the bottom effluenet of a propane/propene splitter which contains significant amounts of propane, propene, propyne and {TAIL ~ propadiene} 
For example , the mixture of { HEAD ~ propyne } and propadiene may have been obtained from the bottom effluenet of a propane / propene splitter which contains significant amounts of propane , propene , propyne and { TAIL ~ propadiene }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL