Task: Program Execution
Input (English): e, c, I, j, 8921, 3833, 1585, 9305, 1519, O, 3031, 2629, l, d, 8685, X, n, 985, 725, g, o, 3649, V, 6537
Output (English): 1, 2, 3, 4, 10, 13, 14, 16, 17, 20, 21, 23