Task: Program Execution
Input (English): pRIaQZYRDJltsTYsbfQKacAdBdvUAsVlkzOx, CsoDObDpQYAHxwBtsTYsbfQKacAdBdrVPYEpyJonER
Output (English): a, b, c, d, e, f, h, j, k, n, o, p, q, r, s, t, v, w, x, y