I 41,NR.80*CS,CZ*
LATT  -2
SYMM  -X,-Y,Z
SYMM  -Y,0.5+X,0.25+Z
SYMM  Y,0.5-X,0.25+Z
    0 .5 / 0 1 / 0 .25
    I 41,NR.80*CS,CZ*