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