P -4 B 2,NR.117*GC,CS* LATT -1 SYMM .5-X, .5+Y, Z SYMM -X, -Y, Z SYMM .5+X, .5-Y, Z SYMM -Y, X, -Z SYMM .5+Y, .5+X, -Z SYMM Y, -X, -Z SYMM .5-Y, .5-X, -Z 0 .5 / 0 .5 / 0 .5 P -4 B 2,NR.117*GC,CS*