{HEAD ~ The CO} and H2 are reacted under {TAIL ~ high pressures} to produce methanol 
are reacted under
{ HEAD ~ The CO } and H2 are reacted under { TAIL ~ high pressures } to produce methanol
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH