/usr/share/doc/normaliz-doc/examples/3x3magiceven_lat.in is in normaliz-doc 3.0.0+ds-3ubuntu1.
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The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | amb_space 9
lattice 3
2 0 -2 -4 0 4 2 0 -2
0 1 2 3 1 -1 0 1 2
0 0 6 8 2 -4 -2 4 4
grading
1 1 1 0 0 0 0 0 0
|