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Let Sigma = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 }
Let Sigma and N the set of nonterminals, be D E with E being the start symbol, and the productions are D digit, which is shorthand for the productions D D and so on E D E ED Which of the following strings could occur in a derivation?
EEE
lambda
EDD
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