This invention relates to processing biomass, such as {HEAD ~ methods} and systems for processing {TAIL ~ biomass} 
for processing
This invention relates to processing biomass , such as { HEAD ~ methods } and systems for processing { TAIL ~ biomass }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL