Task: Program Execution
Input (English): 2841, r, 6891, b, d, 4033, 3421, r, M, 1487, 9043, 6905, Z, R, f, e, 6615, i, 6409, o, 7621, W, S
Output (English): 1, 3, 6, 7, 10, 11, 12, 17, 19, 21