MAGNETIC POINT GROUP  No. 55: 4'2'm

4'2'm	1	2z	4z'	2x'	mxy	Vector	Bidirector
A1	1	1	1	1	1	z	z
A2	1	1	1	-1	-1	z	z
B1	1	1	-1	-1	1	z	z
B2	1	1	-1	1	-1	z	z
E	2	-2	0	0	0	{x ,y }{x ,y }{x ,y }{x ,y }