 Si Sn O
   1.0
     7.2631195200000001    0.0000000000000000    0.0000000000000000
    -3.6315597600000000    6.2900460100000002    0.0000000000000000
     0.0000000000000000    0.0000000000000000   11.7865090600000002
 Si Sn O
   2  12  16
Direct
   0.6666666700000000  0.3333333300000000  0.0954248200000000
   0.3333333300000000  0.6666666700000000  0.5954248200000001
   0.6594124800000001  0.8297062400000000  0.0946875400000000
   0.5040389800000000  0.4959610200000000  0.3500610300000000
   0.0080779500000000  0.5040389800000000  0.8500610300000000
   0.8297062400000000  0.1702937600000000  0.5946875400000000
   0.1702937600000000  0.8297062400000000  0.0946875400000000
   0.4959610200000000  0.5040389800000000  0.8500610300000000
   0.3405875200000000  0.1702937600000000  0.5946875400000000
   0.4959610200000000  0.9919220500000000  0.8500610300000000
   0.5040389800000000  0.0080779500000000  0.3500610300000000
   0.9919220500000000  0.4959610200000000  0.3500610300000000
   0.8297062400000000  0.6594124800000001  0.5946875400000000
   0.1702937600000000  0.3405875200000000  0.0946875400000000
   0.3799634800000000  0.1899817400000000  0.4183282000000000
   0.5427627699999999  0.0855255500000000  0.0480287900000000
   0.3333333300000000  0.6666666700000000  0.1183454500000000
   0.9144744499999999  0.4572372300000000  0.0480287900000000
   0.1899817400000000  0.8100182600000000  0.9183282000000000
   0.0855255500000000  0.5427627699999999  0.5480287900000000
   0.6666666700000000  0.3333333300000000  0.6183454500000001
   0.8100182600000000  0.6200365200000000  0.4183282000000000
   0.6200365200000000  0.8100182600000000  0.9183282000000000
   0.3333333300000000  0.6666666700000000  0.7356230300000000
   0.6666666700000000  0.3333333300000000  0.2356230300000000
   0.4572372300000000  0.5427627699999999  0.5480287900000000
   0.8100182600000000  0.1899817400000000  0.4183282000000000
   0.4572372300000000  0.9144744499999999  0.5480287900000000
   0.5427627699999999  0.4572372300000000  0.0480287900000000
   0.1899817400000000  0.3799634800000000  0.9183282000000000