Task: Program Execution
Input (English): 1, 9, ['S', 'u', '8577', '17', 'W', 'B', 'E', 'P', 'v', 'h', '903', '2757', '3425', 'e', '9377', '5975', 'p', '8449', 'Z', '21', '3205', 'l']
Output (English): S, h, Z