{HEAD ~ The fibrous sheets} are preferably {TAIL ~ nonwovens} and the gypsum core preferably contains a fungicide 
are preferably
{ HEAD ~ The fibrous sheets } are preferably { TAIL ~ nonwovens } and the gypsum core preferably contains a fungicide
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH