Task: Program Execution
Input (English): B, l, Q, 4267, X, 5501, R, e, K, C, v, 2475, 2503, z, Y, 2763, k, I
Output (English): 2, 12, 17, 4267, 24, 5501, 18, 5, 11, 3, 22, 2475, 2503, 26, 25, 2763, 11, 9