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