Task: Program Execution
Input (English): 21, a, f, 8479, n, f, s, 4191, h, C, o, 4397, 9879, T, 9823, 7989, i, c, P
Output (English): 21, 1, 6, 8479, 14, 6, 19, 4191, 8, 3, 15, 4397, 9879, 20, 9823, 7989, 9, 3, 16