{HEAD ~ The surface area} of {TAIL ~ contact} between the first and the second layers can define a frame about the perimeter of the reservoir 
of
{ HEAD ~ The surface area } of { TAIL ~ contact } between the first and the second layers can define a frame about the perimeter of the reservoir
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH