Task: Program Execution
Input (English): 16, ['Q', '423', 'T', '7699', '3479', 'n', 'l', 'S', 'n', '8453', 'L', '6155', 'X', '2793', '3963', '7013', 'z', 'N', 'k', 'o', 'r', '7747', 'v', '8267', 'c', 'S', '6985', 'H', 'l', '5661', '6439', 'P', 'r', '9795', '5021', 'x']
Output (English): Q, z, r