As {TAIL ~ the height h} of the pattern units increases, the thickness of {HEAD ~ the base unit}, which is top region of the pattern units, decreases, and thus, dielectric breakdown may occur 
As { TAIL ~ the height h } of the pattern units increases , the thickness of { HEAD ~ the base unit } , which is top region of the pattern units , decreases , and thus , dielectric breakdown may occur
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH