{HEAD ~ The pivot arm} then releases {TAIL ~ the tire} and the button arm retracts from the tire 
{ HEAD ~ The pivot arm } then releases { TAIL ~ the tire } and the button arm retracts from the tire
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH