Task: Program Execution
Input (English): F 1941 l E u 2731 7201 9471 1323 s z 6777 5231 E 543 B m F 7761 U 8515 3125 8835 m 3833 7377 G K 2377 6443
Output (English): 1, 3, 4, 5, 10, 11, 14, 16, 17, 18, 20, 24, 27, 28