Task: Program Execution
Input (English): L O 1851 o 3485 d 7629 7125 6561 c 7937 8855 O I i R D 5879 7255 b 5683 t 5155 4269 6217 c X F
Output (English): 1, 2, 4, 6, 10, 13, 14, 15, 16, 17, 20, 22, 26, 27, 28