| X1 | X2 | X3 | X4 | X5 | X6 | |
| X1 | 0 | 0 | 0 | 0 | X1 | 0 |
| X2 | 0 | 0 | 0 | X3 | 0 | X2 |
| X3 | 0 | 0 | 0 | 0 | 3X3 | −2X3 |
| X4 | 0 | −X3 | 0 | 0 | 3X4 | −3X4 |
| X5 | −X1 | 0 | −3X3 | −3X4 | 0 | 0 |
| X6 | 0 | −X2 | 2X3 | 3X4 | 0 | 0 |