P2 1/m

From NWChem

group number                 = 11
group name                   =     P2_1/m
crystal system               = Monoclinic
setting number               = 1
number of symmetry operators = 4
+x,+y,+z
-x,+y+1/2,-z
-x,-y,-z
+x,-y+1/2,+z
= operator 1 =
 1.0 0.0 0.0 0.0
 0.0 1.0 0.0 0.0
 0.0 0.0 1.0 0.0
= operator 2 =
 -1.0 0.0 0.0 0.0
 0.0 1.0 0.0 0.5
 0.0 0.0 -1.0 0.0
= operator 3 =
 -1.0 0.0 0.0 0.0
 0.0 -1.0 0.0 0.0
 0.0 0.0 -1.0 0.0
= operator 4 =
 1.0 0.0 0.0 0.0
 0.0 -1.0 0.0 0.5
 0.0 0.0 1.0 0.0

group number                 = 11
group name                   =     P2_1/m
crystal system               = Monoclinic
setting number               = 2
number of symmetry operators = 4
+x,+y,+z
-x,-y,+z+1/2
-x,-y,-z
+x,+y,-z+1/2
= operator 1 =
 1.0 0.0 0.0 0.0
 0.0 1.0 0.0 0.0
 0.0 0.0 1.0 0.0
= operator 2 =
 -1.0 0.0 0.0 0.0
 0.0 -1.0 0.0 0.0
 0.0 0.0 1.0 0.5
= operator 3 =
 -1.0 0.0 0.0 0.0
 0.0 -1.0 0.0 0.0
 0.0 0.0 -1.0 0.0
= operator 4 =
 1.0 0.0 0.0 0.0
 0.0 1.0 0.0 0.0
 0.0 0.0 -1.0 0.5