Task: Program Execution
Input (English): r, 8803, 3207, M, 9985, 9537, 4905, u, G, 5507, 6889, j, X, 4121, 5409, 2627, l, 2059, 7991
Output (English): 2, 3, 5, 6, 7, 10, 11, 14, 15, 16, 18, 19