Task: Program Execution
Input (English): U 4705 7003 439 F 2055 5399 3323 L 779 D 4513 2787 791 3225 3431 f D 9949 7491 8651 N 2847 215 4319 6895 8651 9153 s v U y 5459 Z 5069
Output (English): 21, 4705, 7003, 439, 6, 2055, 5399, 3323, 12, 779, 4, 4513, 2787, 791, 3225, 3431, 6, 4, 9949, 7491, 8651, 14, 2847, 215, 4319, 6895, 8651, 9153, 19, 22, 21, 25, 5459, 26, 5069