This intermediate layer is not {HEAD ~ part} of the gel or {TAIL ~ membrane} and is sufficiently pliable to compensate for any irregularity in, or misalignment of, the cutting edge of the cutting tool relative to the gel or membrane 
of
This intermediate layer is not { HEAD ~ part } of the gel or { TAIL ~ membrane } and is sufficiently pliable to compensate for any irregularity in , or misalignment of , the cutting edge of the cutting tool relative to the gel or membrane
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH