  6  3  12
  0.000000  0.000000  0.000000   !G  1
  0.000000  0.500000  0.000000   !X  2
  0.500000  0.500000  0.000000   !M  3
  0.000000  0.000000  X          !Z  4
  0.500000  0.500000  X          !A  5 
  0.000000  0.500000  X          !R  6
  1  4  5  6    ! G Z A R 
  1  5  6  3    ! G A R M 
  1  6  2  3    ! G R X M 
 
