P 2 3,NR.195*EC,GC,BE* LATT -1 SYMM Z,X,Y SYMM Y,Z,X SYMM X,-Y,-Z SYMM Z,-X,-Y SYMM Y,-Z,-X SYMM -X,Y,-Z SYMM -Z,X,-Y SYMM -Y,Z,-X SYMM -X,-Y,Z SYMM -Z,-X,Y SYMM -Y,-Z,X 0 1 / 0 1 / 0 .5 SONDER: Y .LE. 1-X SONDER: Z .LE. MIN. (X,Y) P 2 3,NR.195*EC,GC,BE*