Na Si 
 1.0000000000000000
    13.9970122580411402    0.0000000000000001   -2.1977782203879577
     0.0000000000000000    6.5962026996089831   -0.0000000000000000
    -9.6178672596452515   -0.0000000000000001   13.9084380147489828
 Na  Si 
  16  16
Selective dynamics
Cartesian
  0.7632591263518919  6.1440810622759745  4.2928830350622640   T   T   T
  8.4248195018666241  6.1440810622759745  0.4635577519242741   T   T   T
  7.7617652553724588  2.8459797124714687  3.1939939248682863   T   T   T
  1.4263133728460342  2.8459797124714687  1.5624468621182519   T   T   T
  3.6158858720439788  0.4521216373330288  7.4177767592987687   T   T   T
 -4.0456745034707451  0.4521216373330288 11.2471020424367651   T   T   T
 -3.3826202569766068  3.7502229871375321  8.5166658694927495   T   T   T
  2.9528316255498237  3.7502229871375321 10.1482129322427888   T   T   T
  4.8247735526096127  3.5046614245296137  0.2774671110812971   T   T   T
  4.3633050756088787  3.5046614245296119  4.4789736759052579   T   T   T
 11.8232796816301864  0.2065600747251215 -0.8214219991126811   T   T   T
 -2.6352010534116794  0.2065600747251210  5.5778627860992307   T   T   T
 -0.4456285542137485  3.0915412750793800 11.4331926832797794   T   T   T
  0.0158399227869672  3.0915412750793800  7.2316861184558014   T   T   T
 -7.4441346832343269  6.3896426248838774 12.5320817934737399   T   T   T
  7.0143460518075447  6.3896426248838765  6.1327970082618082   T   T   T
  3.0653643245856910  6.3933271141913108  1.8767405254046845   T   T   T
  6.1227143036327947  6.3933271141913108  2.8797002615818661   T   T   T
 10.0638704536062651  3.0952257643868215  0.7778514152107033   T   T   T
 -0.8757918253877702  3.0952257643868215  3.9785893717758380   T   T   T
  1.3137806738101661  0.2028755854176795  9.8339192689563664   T   T   T
 -1.7435693052369439  0.2028755854176795  8.8309595327792003   T   T   T
 -5.6847254552104260  3.5009769352221767 10.9328083791503410   T   T   T
  5.2549368237836376  3.5009769352221767  7.7320704225852070   T   T   T
  4.0864682545372428  0.1705110473871833  3.9142382026089182   T   T   T
  5.1016103736812566  0.1705110473871833  0.8422025843776172   T   T   T
 -2.9120378744833251  3.4686123971916842  5.0131273128029026   T   T   T
 12.1001165027018711  3.4686123971916833 -0.2566865258163640   T   T   T
  0.2926767438586214  6.4256916522218228  7.7964215917521145   T   T   T
 -0.7224653752853963  6.4256916522218228 10.8684572099834202   T   T   T
  7.2911828728791930  3.1275903024173179  6.6975324815581390   T   T   T
 -7.7209715043059628  3.1275903024173188 11.9673463201774357   T   T   T