15
fcc
C 0 0 0
C 1 1 1
C 1 1 -1
C 1 -1 1
C 1 -1 -1
C -1 1 1
C -1 1 -1
C -1 -1 1
C -1 -1 -1
C 0 0 2
C 0 0 -2
C 0 -2 0
C 0 2 0
C -2 0 0
C  2 0 0
