The covering means may comprise one or more glazing plates, or they may also be in {TAIL ~ the form} of {HEAD ~ one or more glazing domes} 
The covering means may comprise one or more glazing plates , or they may also be in { TAIL ~ the form } of { HEAD ~ one or more glazing domes }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD