Task: Program Execution
Input (English): RWhpEONMhkakQjUZWglumMYrV, PtRtXtZINirhdhkakQjUZWglumMYURgHNJiU
Output (English): a, d, g, h, i, j, k, l, m, n, p, q, r, t, u, w, x, y, z