Furthermore, even if the stopper has become elongated due to repeated opening and {HEAD ~ closing} of the cover, the biasing member still retrieves {TAIL ~ this elongated portion} within the receiving portion 
Furthermore , even if the stopper has become elongated due to repeated opening and { HEAD ~ closing } of the cover , the biasing member still retrieves { TAIL ~ this elongated portion } within the receiving portion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH