{HEAD ~ The sensing element} can include {TAIL ~ a water permeable material} positioned in between two water impermeable material 
include
{ HEAD ~ The sensing element } can include { TAIL ~ a water permeable material } positioned in between two water impermeable material
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH