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