Task: Program Execution
Input (English): [4503, 'f', 'a', '4615', 'y', '2509', 'Z', 'S', 'o', '1657', '5399', 'Q', 8269, 3845, 'v', 2193, 'f', 5421, 'Z'], ['Y', 7899, 7111, '4615', 'y', '2509', 'Z', 'S', 'o', '1657', '5399', 'W', 1951, 't', 2523, 1495]
Output (English): 4615, y, 2509, Z, S, o, 1657, 5399