Task: Program Execution
Input (English): 9415, x, 8215, W, F, 3005, 2287, Z, 6267, K, O, J, 6919, B, 5315, 5131, 6541, 2809, D, l, 4781, N
Output (English): 2, 4, 5, 8, 10, 11, 12, 14, 19, 20, 22