Task: Program Execution
Input (English): HqsprVBJDJHxaChQRDGFuXtB, bqqYRVBJDJHxaChQRDGoZwgTnFNbwLKBj
Output (English): a, b, c, d, f, g, h, j, k, l, n, o, q, r, t, v, w, x, y, z