P 42 C M,NR.101*CS,CZ*
LATT  -1
SYMM  -X,-Y,Z
SYMM  X,-Y,0.5+Z
SYMM  -X,Y,0.5+Z
SYMM  Y,X,Z
SYMM  -Y,-X,Z
SYMM  Y,-X,0.5+Z
SYMM  -Y,X,0.5+Z
    0 .5 / 0 .5 / 0 1
    SONDER: X .LE. Y
    P 42 C M,NR.101*CS,CZ*