P C C N,NR.56*CS,CZ*
LATT  1
SYMM  0.5-X,0.5-Y,Z
SYMM  0.5+X,-Y,0.5-Z
SYMM  -X,0.5+Y,0.5-Z
    0 .25 / 0 1 / 0 .5
    P C C N,NR.56*CS,CZ*