Task: Program Execution
Input (English): 8121 975 C 2921 q F K m D 7491 9817 U I 1069 p l W 1875 3577 z 4571 5119 E G a 2937 O 6019 k P X i 4595 T c 4283 K v Q 1325
Output (English): 3, 5, 6, 7, 8, 9, 12, 13, 15, 16, 17, 20, 23, 24, 25, 27, 29, 30, 31, 32, 34, 35, 37, 38, 39