8          6
 -1.000000E+00 -1.000000E+00 -1.000000E+00
  1.000000E+00 -1.000000E+00 -1.000000E+00
  1.000000E+00  1.000000E+00 -1.000000E+00
 -1.000000E+00  1.000000E+00 -1.000000E+00
 -1.000000E+00  1.000000E+00  1.000000E+00
 -1.000000E+00 -1.000000E+00  1.000000E+00
  1.000000E+00 -1.000000E+00  1.000000E+00
  1.000000E+00  1.000000E+00  1.000000E+00
          4          1          2          3          4
          4          7          8          3          2
          4          8          5          4          3
          4          5          6          1          4
          4          6          7          2          1
          4          6          5          8          7