generated by phonopy
   1.0
     0.0000000000000000    2.7344629562984921    2.7344629562984921
     2.7344629562984921    0.0000000000000000    2.7344629562984921
     2.7344629562984921    2.7344629562984921    0.0000000000000000
Si
   2
Direct
  0.0000000000000000  0.0000000000000000  0.0000000000000000
  0.2500000000000000  0.2500000000000000  0.2500000000000000
