Si 
 1.0000000000000000
     6.6461946027104499    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.6461946027104499    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.6461946027104499
 Si 
  16
Selective dynamics
Cartesian
  0.7276461936321788  0.7276461936321788  0.7276461936321788   T   T   T
  2.5954511077230471  5.9185484090782738  4.0507434949874046   T   T   T
  5.9185484090782738  4.0507434949874046  2.5954511077230471   T   T   T
  4.0507434949874046  2.5954511077230471  5.9185484090782738   T   T   T
  4.0507434949874046  4.0507434949874046  4.0507434949874046   T   T   T
  5.9185484090782738  2.5954511077230471  0.7276461936321786   T   T   T
  2.5954511077230471  0.7276461936321788  5.9185484090782738   T   T   T
  0.7276461936321788  5.9185484090782738  2.5954511077230471   T   T   T
  5.9185484090782738  5.9185484090782738  5.9185484090782738   T   T   T
  4.0507434949874046  0.7276461936321786  2.5954511077230471   T   T   T
  0.7276461936321788  2.5954511077230471  4.0507434949874046   T   T   T
  2.5954511077230471  4.0507434949874046  0.7276461936321786   T   T   T
  2.5954511077230471  2.5954511077230471  2.5954511077230471   T   T   T
  0.7276461936321788  4.0507434949874046  5.9185484090782738   T   T   T
  4.0507434949874046  5.9185484090782738  0.7276461936321786   T   T   T
  5.9185484090782738  0.7276461936321788  4.0507434949874046   T   T   T