Task: Program Execution
Input (English): 10, ['1639', 'B', '1281', 'R', 'X', 'K', 'W', '4137', '5735', 'f', 'f', '1699', 'd', 'x', 'P', '8345', '7305', 'U', '6221', 'g', '9423', '3477', 'O', '8225', '7549']
Output (English): f, 1699, d, x, P, 8345, 7305, U, 6221, g, 9423, 3477, O, 8225, 7549