{HEAD ~ Such pivoting movement} will be performed by {TAIL ~ the user} when handle 14 is not inserted within the gap 12 of nested weights 4 in order that such movement not be obstructed by side rails 8 
{ HEAD ~ Such pivoting movement } will be performed by { TAIL ~ the user } when handle 14 is not inserted within the gap 12 of nested weights 4 in order that such movement not be obstructed by side rails 8
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH