{HEAD ~ Absorbable surgical sutures} coated with {TAIL ~ polyoxyethylene polyoxypropylene copolymer lubricant} 
coated with
{ HEAD ~ Absorbable surgical sutures } coated with { TAIL ~ polyoxyethylene polyoxypropylene copolymer lubricant }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL