Task: Program Execution
Input (English): 2301, x, 2715, 3635, D, 6505, Y, 683, 5013, A, Y, 1407, p, 6621, M, 3615, 4701, 8727, p, 4857, F, u, 1567
Output (English): 2, 5, 7, 10, 11, 13, 15, 19, 21, 22