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