Task: Program Execution
Input (English): 7181, F, O, 915, P, 873, z, 3191, j, M, C, 739, a, 3311, 2643, g, b, 7987, e, 5351, a, Y, 4219
Output (English): 1, 4, 6, 8, 12, 14, 15, 18, 20, 23