[Context-free grammar recognizer:] As each symbol X_i is scanned, a … point in the scan. Each state in the … string which is derived from its right side, … have recognized so far, (3) a pointer back … of the production, and (4) a k-symbol string … [p.97] Note also that … we carry along all possible parses simultaneously in … effort and also avoids the left-recursion problem. …
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