{TAIL ~ The apparatus} further includes {HEAD ~ an illumination system} for illuminating the interior of the hole 
{ TAIL ~ The apparatus } further includes { HEAD ~ an illumination system } for illuminating the interior of the hole
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH