{HEAD ~ This transformation} can be accomplished using {TAIL ~ standard methods} to effect carboxylic acid to carboxylic acid amide transformations 
accomplished using
{ HEAD ~ This transformation } can be accomplished using { TAIL ~ standard methods } to effect carboxylic acid to carboxylic acid amide transformations
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH