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