Each adhesive cluster includes {TAIL ~ a perimeterless grouping} of {HEAD ~ discrete} spaced apart adhesive droplets 
Each adhesive cluster includes { TAIL ~ a perimeterless grouping } of { HEAD ~ discrete } spaced apart adhesive droplets
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH