Task: Program Execution
Input (English): b, 1707, U, 7425, T, 4291, s, 8249, 2585, 7221, 1789, 5809, 6813, B, 659, I, 9597, r, 9381, e, h
Output (English): 2, 4, 6, 8, 9, 10, 11, 12, 13, 15, 17, 19