{HEAD ~ Examples} of a computer readable medium include a semiconductor or solid state memory, magnetic tape, a removable computer diskette, a random access memory , {TAIL ~ a read only memory} , a rigid magnetic disk and an optical disk 
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{ HEAD ~ Examples } of a computer readable medium include a semiconductor or solid state memory , magnetic tape , a removable computer diskette , a random access memory , { TAIL ~ a read only memory } , a rigid magnetic disk and an optical disk
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