Task: Program Execution
Input (English): 7153, K, 1681, 3031, d, 9911, i, s, b, 943, 4419, 1851, u, H, Z, 3229, 7247, Y, U, o, 8793
Output (English): 1, 3, 4, 6, 10, 11, 12, 16, 17, 21