P -4 21 M,NR.113*CS,CZ*
LATT   -1
SYMM   -X,-Y,Z
SYMM   -Y,X,-Z
SYMM   Y,-X,-Z
SYMM   0.5-X,0.5+Y,-Z
SYMM   0.5+X,0.5-Y,-Z
SYMM   0.5+Y,0.5+X,Z
SYMM   0.5-Y,0.5-X,Z
    0 .5 / 0 .5 / 0 1
    SONDER: Y .LE. .5-X
    P -4 21 M,NR.113*CS,CZ*