      4
Substrate in the configuration of the optimal adsorbed system
Pt     0.000000000         0.000000000         0.000000000
Pt     0.000000000         1.961949944         1.961949944
Pt     1.961949944         0.000000000         1.961949944
Pt     1.961949944         1.961949944         0.000000000
