Task: Program Execution
Input (English): G, 2309, w, F, E, 6999, g, 5107, 4287, 1895, Z, 3981, L, e, 6747, J, a, 2437, V, 4569, a
Output (English): 2, 6, 8, 9, 10, 12, 15, 18, 20