Task: Program Execution
Input (English): hBxPIhVsQGaIwhbFfELehOeKq, oDUOXZzOFsQGaIwhbFfHmRUqnxOsP
Output (English): a, b, d, f, g, h, i, m, n, o, p, q, r, s, u, w, x, z