The first and second adhesive strips and {TAIL ~ the Y site identification element} are contained within a packet having {HEAD ~ an openable side} 
The first and second adhesive strips and { TAIL ~ the Y site identification element } are contained within a packet having { HEAD ~ an openable side }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD