{HEAD ~ A driving mechanism} first turns {TAIL ~ the first lever section}, and thereafter turns the second lever section, thereby pushing out a disc from the disc accommodation section 
turns
{ HEAD ~ A driving mechanism } first turns { TAIL ~ the first lever section } , and thereafter turns the second lever section , thereby pushing out a disc from the disc accommodation section
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL 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