Si 
 1.0000000000000000
    20.7818227819447152   -0.0000000000000000    0.0000000000000000
     0.0000000000000000   20.7818227819447152    0.0000000000000000
     0.0000000000000000    0.0000000000000000   20.7818227819447152
 Si 
  16
Selective dynamics
Cartesian
  2.6657165068531703  2.6657165068531703  2.6657165068531712   T   T   T
  7.7251948841191806 18.1161062750914574 13.0566278978255514   T   T   T
 18.1161062750914574 13.0566278978255532  7.7251948841191806   T   T   T
 13.0566278978255532  7.7251948841191815 18.1161062750914574   T   T   T
 13.0566278978255532 13.0566278978255532 13.0566278978255514   T   T   T
 18.1161062750914574  7.7251948841191815  2.6657165068531712   T   T   T
  7.7251948841191806  2.6657165068531703 18.1161062750914574   T   T   T
  2.6657165068531703 18.1161062750914574  7.7251948841191806   T   T   T
 18.1161062750914574 18.1161062750914574 18.1161062750914574   T   T   T
 13.0566278978255532  2.6657165068531699  7.7251948841191806   T   T   T
  2.6657165068531703  7.7251948841191815 13.0566278978255514   T   T   T
  7.7251948841191806 13.0566278978255532  2.6657165068531712   T   T   T
  7.7251948841191806  7.7251948841191815  7.7251948841191806   T   T   T
  2.6657165068531703 13.0566278978255532 18.1161062750914574   T   T   T
 13.0566278978255532 18.1161062750914574  2.6657165068531712   T   T   T
 18.1161062750914574  2.6657165068531703 13.0566278978255514   T   T   T