1) G1[A]: A-› aABe | a В-›Вb | d check every non-terminal (A and B)                                              2) G2[A]: A-› baBε B-› Abb | a need to calculate, First (A-› baB)=? First (A-›ε)=? ,First (B-›…)=?                                     3)  G3[S]:S->Aa |b A->SB B->ab , find first（S-》xxx），first set of each production .

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Q: Provide an example of a situation in which one of the four access control methods might be…

A: Access Control Method: Access control techniques safeguard the things you desire, such as people,…