There is an entrance 11 on {HEAD ~ a surface} of {TAIL ~ the scanner housing structure} 10 for feeding therefrom an article to be scanned 
There is an entrance 11 on { HEAD ~ a surface } of { TAIL ~ the scanner housing structure } 10 for feeding therefrom an article to be scanned
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH