 get $$\begin{aligned} &&\left\langle \gamma \left( X_{-}^{\prime },Y_{-}^{\prime \bot }\right) \left( g_{+},Z_{+}^{\bot }\right) ^{-0}\otimes \gamma \left( X_{-}^{\prime \prime },Y_{-}^{\prime \prime \bot }\right) \left( g_{+},Z_{+}^{\bot }\right) ^{-0},\pi _{+}\left( g_{+},Z_{+}^{\bot }\right) \right\rangle \\ &=&\