positioning and securing said collar on the outer periphery of {HEAD ~ said flower pot} between {TAIL ~ the upper and lower ends} 
positioning and securing said collar on the outer periphery of { HEAD ~ said flower pot } between { TAIL ~ the upper and lower ends }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL