MAGNETIC POINT GROUP  No. 18: 321'

321'	1	3z	2x	1'	3z'	2x'	Vector	Bidirector
A1	1	1	1	1	1	1		z z
A2	1	1	-1	1	1	-1	z z
E	2	-1	0	2	-1	0	{x ,y }{x ,y }
mA1	1	1	1	-1	-1	-1		z z
mA2	1	1	-1	-1	-1	1	z z
mE	2	-1	0	-2	1	0	{x ,y }{x ,y }