2
Lattice="1. 0.0 0.0 0.5 0.8660254037844386 0.0 0.0 0.0 10" Properties=species:S:1:pos:R:3  pbc="T T F" size="1 1"  adsorbate_elements="C"
H 0.2 0.2 2
C  0.2 0.2 4
