Quantum Fourier Transformation

The QFT:

FT (bit labels);

The $\mathrm{QFT}^{-1}$:

FT-1 (bit labels);

* The ``bit labels'' is a string in the style of ``1-6'' (qubit 1 to qubit 6) and/or ``1 3 5'' (qubit 1, 3, and 5).