{TAIL ~ Exemplary embodiments} of the invention relate to a method for producing {HEAD ~ a protective structure}, and the protective structure 
{ TAIL ~ Exemplary embodiments } of the invention relate to a method for producing { HEAD ~ a protective structure } , and the protective structure
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH