Task: Program Execution
Input (English): 9241, 1203, O, 4381, 6153, J, 9463, 5975, a, G, 7097, 7705, 3747, D, 3629, 1043, I, o, n, 1985, 6417
Output (English): 1, 2, 4, 5, 7, 8, 11, 12, 13, 15, 16, 20, 21