... erase A and move to qk if receiving a and at qj erase BC and move to qkAt qi erase A and move to qk if receiving a and at qj erase B and move to qm and at qm erase C and move ... A and move to qk if receiving a and at qj erase B and move to qm and at qm erase C and move to qk(qiAqk) → a(qjBqm)(qmCqk) 2Pushdown Automata ãThere are context-free languages ... δ(q1, a, b) 12 Language accepted by NPDALet M = (Q, ∑, Γ, δ, q0, z, F) be an NPDA.L(M) = {w ∈ Σ* | (q0, w, z) |∗Μ (qf, λ, u), qf ∈ F, u ∈ Γ*} 15NPDA and Context-Free Languages Greibach...