{HEAD ~ The cover flap} is aligned along two edges with two edges of the backing sheet and attached along {TAIL ~ at least one edge} 
{ HEAD ~ The cover flap } is aligned along two edges with two edges of the backing sheet and attached along { TAIL ~ at least one edge }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL