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#CoreShells bond  BondDipoles UreyBradley bend  inv  tors improper-torsion bond/bond bond/bend bend/bend stretch/torsion bend/torsion
          0    3            0           3    6    0     0                0         0         0         0               0            6
# bond stretch atom n1-n2, equilibrium distance, bondforce-constant
Si O   HARMONIC_BOND 300724.7766358210 0.0
Si Oa  HARMONIC_BOND 300724.7766358210 0.0
Al Oa  HARMONIC_BOND 300724.7766358210 0.0
# Urey-Bradly atom n1-n2, equilibrium distance, bondforce-constant
Si O  Si HARMONIC_UREYBRADLEY 27488.737702263100 0.0
Si Oa Si HARMONIC_UREYBRADLEY 27488.737702263100 0.0
Al Oa Si HARMONIC_UREYBRADLEY 27488.737702263100 0.0
# bond bending atom n1-n2-n3, equilibrium angle, bondforce-constant
O   Si  O   HARMONIC_BEND 69537.444165505200 109.5
Oa  Si  O   HARMONIC_BEND 69537.444165505200 109.5
Oa  Al  Oa  HARMONIC_BEND 69537.444165505200 109.5
Si  O   Si  QUARTIC_BEND 5462.505569039470 149.5 -17157.805510863100 13351.672598242100
Si  Oa  Si  QUARTIC_BEND 5462.505569039470 149.5 -17157.805510863100 13351.672598242100
Al  Oa  Si  QUARTIC_BEND 5462.505569039470 149.5 -17157.805510863100 13351.672598242100
# bend/torsion atom n1-n2-n3-n4,
Si O   Si O   SMOOTHED_THREE_COSINE_DIHEDRAL 0.0 0.0 -352.4197 
Si O   Si Oa  SMOOTHED_THREE_COSINE_DIHEDRAL 0.0 0.0 -352.4197 
Si Oa  Si O   SMOOTHED_THREE_COSINE_DIHEDRAL 0.0 0.0 -352.4197 
Si Oa  Al Oa  SMOOTHED_THREE_COSINE_DIHEDRAL 0.0 0.0 -352.4197 
Al Oa  Si O   SMOOTHED_THREE_COSINE_DIHEDRAL 0.0 0.0 -352.4197 
Al Oa  Si Oa  SMOOTHED_THREE_COSINE_DIHEDRAL 0.0 0.0 -352.4197