Task: Program Execution
Input (English): d, 2543, 7765, 1789, j, 4789, 1137, H, Y, 8565, L, 2477, 5661, x, 5223, 4311, 5235, 1815, e, 375, A, 7359
Output (English): d, j, H, Y, L, x, e, A