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We use experimental data on $e^+e^- \to \eta (\eta^{\prime})\pi^+\pi^-$ andconservation of vector current to estimate the branching fractions of $\tau^-$decay to $\eta (\eta^{\prime})\pi^-\pi^0\nu_{\tau}$. The obtained values arecompared to the experimental results.

\tau lepton decays and CVC