Task: Program Execution
Input (English): vUARagkYjvpaQwWyHdxJXqPdu, HMmURaEKNDvpaQwWyHdxJXqkdFmgzJPvMv
Output (English): a, d, e, f, g, h, j, k, m, n, p, q, r, u, v, w, x, y, z