Task: Program Execution
Input (English): Y, s, 4207, 1891, b, 8557, 9851, O, i, a, 2279, 8425, t, w
Output (English): 25, 19, 4207, 1891, 2, 8557, 9851, 15, 9, 1, 2279, 8425, 20, 23