d) using the endoscope to bend {HEAD ~ the working end} of {TAIL ~ the flexible tube} to move the second jaw against patient tissue of the esophagus or the stomach; and 
of
d ) using the endoscope to bend { HEAD ~ the working end } of { TAIL ~ the flexible tube } to move the second jaw against patient tissue of the esophagus or the stomach ; and
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH