{HEAD ~ The first layer} is applied to {TAIL ~ at least a portion} of the core and contains a first polymer 
is applied to
{ HEAD ~ The first layer } is applied to { TAIL ~ at least a portion } of the core and contains a first polymer
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH