Task: Program Execution
Input (English): 2669, 1899, 1051, 3691, t, W, 2093, U, 7025, t, 5533, U, J, c, 8991, q, r, J, e, J
Output (English): 5, 6, 8, 10, 12, 13, 14, 16, 17, 18, 19, 20