Task: Program Execution
Input (English): 3847 6953 2693 j x 9853 155 5873 c X 5409 x 2283 k 1381 q k l p 8719 805 C 8389 r 2801 9737 H t 9761 5051 7613 g 1933 5435 R D Z
Output (English): 1, 2, 3, 6, 7, 8, 11, 13, 15, 20, 21, 23, 25, 26, 29, 30, 31, 33, 34