Task: Program Execution
Input (English): f, 4207, 4115, F, d, g, 2803, 5115, 4937, 2683, h, 9195, 3575, l, D, C, 9153, W, 243, r, 4293, u, I, v
Output (English): f, F, d, g, h, l, D, C, W, r, u, I, v