C M C 21,NR.36*BE,GC*
LATT -7
SYMM   -X,   Y,   Z
SYMM   -X,  -Y,.5+Z
SYMM    X,  -Y,.5+Z
                    4 A 0, -Y, .5+Z
    0 .5 / 0 .5 / 0 .5
    C M C 21,NR.36*BE,GC*