Within the interior of the tube, {HEAD ~ one end} of {TAIL ~ a flexible beam} or wire is inserted into the supporting material 
of
Within the interior of the tube , { HEAD ~ one end } of { TAIL ~ a flexible beam } or wire is inserted into the supporting material
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH