Simplify : $\bigg[ \sqrt[4]{\bigg(\large\frac{1}{x} \bigg) ^{-12}}\bigg]^{\large\frac{-2}{3}}$

Question

$\begin{array}{1 1} \large\frac{1}{y^2} \\ \large\frac{1}{x^2} \\ \large\frac{1}{x} \\ \large\frac{1}{y} \end{array} $