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[lbo@ustc.edu]

Dear All,
I would like to calculate a super cell system of PbFCl.
In a Unit Cell, there are two PbFCl moleculars.I can define the unit cell as 

acell 4.106 4.106 7.230 angstrom   
rprim 1.0  0.0  0.0        
      0.0  1.0  0.0   
      0.0  0.0  1.0  
ntypat 3
znucl 9 17 82
spgroup 129
natom 6
natrd 3
typat 1 2 3
xred                                        
0.0   0.0   0.0
0.5   0.0   0.35       
0.0   0.5   0.2 

Now, I want to define a super cell with 2x2x2 unit cell, 
there are 16 PbFCl moleculars (48 atoms).I have no idea how to deal with it,
do I need input 48 atom positions? And in super cell case, how to set spgroup?

Thank you in advance!

Bo Liu