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