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