Task: Program Execution
Input (English): 5533, l, 3657, 8847, 6231, 5433, P, f, M, 5567, 8071, 9387, u, Y, O, y, Z, l, 3471
Output (English): 2, 7, 8, 9, 13, 14, 15, 16, 17, 18