Task: Program Execution
Input (English): r, 9101, 7491, 8419, M, n, V, 1741, 2797, m, 551, L, 179, 661, M, o, C, 5595, 6049, y, 1897, 5959, X, 9773
Output (English): 1, 5, 6, 7, 10, 12, 15, 16, 17, 20, 23