Task: Program Execution
Input (English): s, 2037, b, 6635, t, 9871, 2333, E, I, 5239, F, 8375, f, s, K, 8949, r, m, U, 9523, 4289, 6583, 2271, 1869
Output (English): 2, 4, 6, 7, 10, 12, 16, 20, 21, 22, 23, 24