Task: Program Execution
Input (English): ILLOEUONWRrblBlZBqGRwFdUSDx, BrTtqyhJcLOEUONWRrblBlFVhxqNJmYYA
Output (English): a, b, c, e, f, h, j, l, m, n, o, q, r, t, u, v, w, x, y