MSG 70.531

\[\begin{align*} &E_{2}^{1,-1}=0\\ &E_{1}^{0,-1}=\mathbb{Z}[\boldsymbol{b}^{(0)}_{\text{A}_1}]\\ &E_{1}^{1,-1}=\mathbb{Z}[\boldsymbol{b}^{(1)}_{a_1}]\oplus\mathbb{Z}[\boldsymbol{b}^{(1)}_{e_1}]\\ &E_{1}^{2,-1}=2\mathbb{Z}[\boldsymbol{b}^{(2)}_{\gamma _1}] \end{align*}\]

\[\begin{align*} &[X^{(1)}]^{-1}=\left( \begin{array}{cc} a_1 & e_1 \\ 1 & 1 \\ 0 & 1 \\ \end{array} \right)\\ &[V^{(0)}]^{-1}=\left( \begin{array}{c} \text{A}_1 \\ 1 \\ \end{array} \right)\\ &\Lambda^{(0)}=\left( \begin{array}{c} 1 \\ \end{array} \right)\\ &[V^{(1)}]^{-1}=\left( \begin{array}{cc} a_1 & e_1 \\ 1 & 1 \\ 0 & 1 \\ \end{array} \right)\\ &\Sigma^{(1)}=\left( \begin{array}{cc} 1 & 0 \\ \end{array} \right) \end{align*} \]