{HEAD ~ Process} for producing {TAIL ~ a polyamide} based on a dicarboxylic acid and a diamine 
for producing
{ HEAD ~ Process } for producing { TAIL ~ a polyamide } based on a dicarboxylic acid and a diamine
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH