a layer of microsphere adhesive on {TAIL ~ at least a portion} of {HEAD ~ the first major surface} of the substrate, the microsphere adhesive comprising 
a layer of microsphere adhesive on { TAIL ~ at least a portion } of { HEAD ~ the first major surface } of the substrate , the microsphere adhesive comprising
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH