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