Task: Program Execution
Input (English): 7845 D 1579 F 6333 A 3129 6085 e 7875 2437 D k B 207 6559 6017 V g 6235 a C 9015 1757 1133 l
Output (English): 1, 3, 5, 7, 8, 10, 11, 15, 16, 17, 20, 23, 24, 25