Task: Program Execution
Input (English): 9403, C, Y, O, E, 4247, M, l, 7221, 4747, h, 8413, S, 1557, 9645, 5725, X, 9383, q, 5499, V, 5977
Output (English): 2, 3, 4, 5, 7, 8, 11, 13, 17, 19, 21