Task: Program Execution
Input (English): 4031, f, Z, 2345, U, 2527, 4551, e, a, 6097, 5107, G, 6785, X, 431, N, O, x, h, l, D, 5843, 5127, d
Output (English): f, Z, U, e, a, G, X, N, O, x, h, l, D, d, 4031, 2345, 2527, 4551, 6097, 5107, 6785, 431, 5843, 5127