In {HEAD ~ order} to avoid {TAIL ~ contamination} of the product in this case, the selection of possible construction materials, in particular for regions exposed to very high temperatures, is very limited 
In { HEAD ~ order } to avoid { TAIL ~ contamination } of the product in this case , the selection of possible construction materials , in particular for regions exposed to very high temperatures , is very limited
OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH