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\begin{gathered}\pi_{m}=\rho_{m 1} D_{1}+\rho_{m 2} D_{2}-x^{2}-\phi \frac{1}{2} e_{1}^{2}-\frac{1}{2} \phi e_{2}^{2}, \\\pi_{r}=\rho_{r 1} D_{1}+\rho_{r 2} D_{2}-\frac{1}{2}(1-\phi) e_{1}^{2}-\frac{1}{2}(1-\phi) e_{2}^{2} .\end{gathered}