Task: Program Execution
Input (English): T, 2623, 9977, 8927, 537, 6235, f, 1945, C, 9777, 2959, 6141, U, 9641, I, q, Y, 5367, 4325, k, A, 1663
Output (English): T, f, C, U, I, q, Y, k, A, 2623, 9977, 8927, 537, 6235, 1945, 9777, 2959, 6141, 9641, 5367, 4325, 1663