Indicate the reasons why the following processes are forbidden: (1) Σ−A0+π−\Sigma-A^{0}+\pi^{-}Σ−A0+π− (2) π−+p→K++K−\pi^{-}+p \rightarrow K^{+}+K^{-}π−+p→K++K− (3) K−+n→Ω−+K++K0K^{-}+n \rightarrow \Omega^{-}+K^{+}+K^{0}K−+n→Ω−+K++K0 (4) n+p→Σ++Λ0n+p \rightarrow \Sigma^{+}+\Lambda^{0}n+p→Σ++Λ0 (5) π−→μ−+e++e−\pi^{-} \rightarrow \mu^{-}+e^{+}+e^{-}π−→μ−+e++e− (6) μ−→e−+ve+vμ\mu^{-} \rightarrow e^{-}+v_{e}+v_{\mu}μ−→e−+ve+vμ