Task: Program Execution
Input (English): 1109, 4917, 969, v, r, 2533, z, 3423, W, l, B, s, r, O, 5429, B, 799, 5897, P, 6115, 6613, l
Output (English): 1, 2, 3, 6, 8, 15, 17, 18, 20, 21