In plan view the pad has an elongated egg shape, matching the shape of {HEAD ~ the end} of {TAIL ~ the butt} 
of
In plan view the pad has an elongated egg shape , matching the shape of { HEAD ~ the end } of { TAIL ~ the butt }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL