Task: Program Execution
Input (English): U, 6171, t, F, z, 7913, Z, 7231, S, 217, Q, 8905, 4157, 2759, 7925, 9145, 6801, 8913, b, O, d, j, x, q
Output (English): 1, 3, 4, 5, 7, 9, 11, 19, 20, 21, 22, 23, 24