Question: Let = {1, 2, 3, 4} and C = {w * | in w, the number of 1s equals the number of

Let Σ = {1, 2, 3, 4} and C = {w ∈ Σ^*| in w, the number of 1s equals the number of 2s, and the number of 3s equals the number of 4s}. Show that C is not context free.

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