Task: Program Execution
Input (English): 4, 14, ['3503', 'L', 'p', 'q', 'V', 'l', 'f', 'u', 'i', 'Y', '6963', 'V', 'x', 'P', '8253', '999']
Output (English): P, x, V, 6963, Y, i, u, f, l, V, q