Task: Program Execution
Input (English): 9387, l, 7061, s, 4879, 1049, k, 2409, E, 7469, 213, 4849, 1059, 2611, 3817, q, f, 2823, U, 201, 2921
Output (English): 1, 3, 5, 6, 8, 10, 11, 12, 13, 14, 15, 18, 20, 21