{\mathpzc{k}}}=\left\{\left(  \begin{smallmatrix}  0 & 0 & \lambdaup & 0\\  0 & 0 & 0 & 0 \\   0 & 0 & 0 & 0 \\    0 & 0 & 0 & 0  \end{smallmatrix}\right)\right\},\;   {\mathfrak{g}}_{{\mathpzc{h}}-0}=\left\{\left(  \begin{smallmatrix}  0 & 0 & 0 & 0\\  0 & 0 & 0 & 