Task: Program Execution
Input (English): 6725, 4543, m, E, u, 7193, 5919, x, 607, 5155, 1617, C, U, 3913, 2235, c, K, 4223, 4927, 6771, 9803, 2375
Output (English): 1, 2, 6, 7, 9, 10, 11, 14, 15, 18, 19, 20, 21, 22