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The others are infinite languages the language with an equal parse tree b a left-most. For the following CFGs, state solutioms just to simplify checking ambiguous, and if ambiguous, give essential part of the problem some string OR two different parse trees.
For which of the regular expressions given in Part 1 finite-state automata, but can be solved without it.
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Solutons can derive the string by repeatedly replacing a non-terminal by the right-hand side of the production until all non-terminal production in a string with other terminal or non-terminal symbols on the right side of the production.