#g2 f1 % homogenously decomposable bravais-group
5	% generator
 1  1 0 0 0
 0 -1 0 0 0
 0  1 1 0 0
 0 -1 0 1 0
 0  1 0 0 1
5	% generator
 -1  0  0 1 1
  1  0  0 0 0
 -1 -1  0 1 0
  1  0 -1 0 0
 -1  0  0 0 1
5x0	% invariant form
  4
  1  4
 -2  1 4
 -2 -2 1 4
 -2  1 1 1 4
2^5  * 3^2  * 5^1   = 1440 % order of the group
