LAMMPS data file
    3 atoms
    2 bonds
    1 angles
       0 dihedrals
       0 impropers
       2 atom types
       1 bond types
       1 angle types
       0 dihedral types
       0 improper types

     -5      5        xlo xhi
     -5      5        ylo yhi
     -5      5        zlo zhi

Masses

       1       1.008000
       2      15.999400

Atoms

    1    1       2      -0.847600      -0.000009       2.466906       2.466871
    2    1       1       0.423800      -0.118331       1.592644       2.937684
    3    1       1       0.423800      -0.675232       2.544522       1.733352

Bonds

    1       1    1    2
    2       1    1    3

Angles

    1       1    2    1    3