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Subjective
GATE CSE 1996
Let G be a context-free grammar where G = ( { S, A, B, C}, { a,b, d}, P, S ) with the productions in P given below.
S → ABAC
A → aA ∣ ε
B → bB ∣ ε
C → d
(ε denotes null string). Transform the grammar G to an equivalent context-free grammar G’ that has no ε productions and no unit productions. (A unit production is of the form x → y, and x and y are non terminals.)