Task: Program Execution
Input (English): D, 8481, 6243, b, 4593, 31, f, 4383, Z, 6131, A, l, 8219, 9221, t, 727, 9911, a, d, 4921, 7745
Output (English): 2, 3, 5, 6, 8, 10, 13, 14, 16, 17, 20, 21