Task: Program Execution
Input (English): AyAnkYkTLehltQeKCHyRkipdXIWfzCNqvCYHug, aDNuvEtQeKCHyRkipdXIWSFFTBiQdx
Output (English): a, c, d, e, f, g, h, i, k, l, n, p, q, r, t, u, v, w, x, y, z