Task: Program Execution
Input (English): G, 7267, j, x, f, u, o, o, 4771, a, Y, P, 3855, 1447, 7137, p, 4343, T, 4179, 5153, b, v, d
Output (English): 2, 9, 13, 14, 15, 17, 19, 20