A wall is formed in the bottom ply which defines {TAIL ~ a well} into which {HEAD ~ a fragrance sample} is deposited 
A wall is formed in the bottom ply which defines { TAIL ~ a well } into which { HEAD ~ a fragrance sample } is deposited
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL