In this latter there is provided a cup coaxial with the connection channel and with {HEAD ~ its concavity} facing {TAIL ~ the blister} in the piercing position 
facing
In this latter there is provided a cup coaxial with the connection channel and with { HEAD ~ its concavity } facing { TAIL ~ the blister } in the piercing position
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 OTH OTH OTH OTH