Face coatings may also be applied to one or more of {HEAD ~ the faces} extending in {TAIL ~ relatively narrow strips} around the aperture of the base sheet 
extending in
Face coatings may also be applied to one or more of { HEAD ~ the faces } extending in { TAIL ~ relatively narrow strips } around the aperture of the base sheet
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH