Information of spin space group $F\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{\text{-}1}{(1/2 \ 1/2 \ 1/2)}}\ce{^{\infty m}{1}}$ ( nSSG:22.16.2.1 )

General Positions

The continuously infinite group ^∞1 is omitted.

Coordinates	Seitz symbol
a, b, c | x, y, z	{ 1 ‖ 1 | 0 }
a, -b, -c | x, y, z	{ 1 ‖ 2100 | 0 }
-a, b, -c | x, y, z	{ 1 ‖ 2010 | 0 }
-a, -b, c | x, y, z	{ 1 ‖ 2001 | 0 }
a, b+1/2, c+1/2 | x, y, z	{ 1 ‖ 1 | 0 1/2 1/2 }
a, -b+1/2, -c+1/2 | x, y, z	{ 1 ‖ 2100 | 0 1/2 1/2 }
-a, b+1/2, -c+1/2 | x, y, z	{ 1 ‖ 2010 | 0 1/2 1/2 }
-a, -b+1/2, c+1/2 | x, y, z	{ 1 ‖ 2001 | 0 1/2 1/2 }
a+1/2, b, c+1/2 | x, y, z	{ 1 ‖ 1 | 1/2 0 1/2 }
a+1/2, -b, -c+1/2 | x, y, z	{ 1 ‖ 2100 | 1/2 0 1/2 }
-a+1/2, b, -c+1/2 | x, y, z	{ 1 ‖ 2010 | 1/2 0 1/2 }
-a+1/2, -b, c+1/2 | x, y, z	{ 1 ‖ 2001 | 1/2 0 1/2 }
a+1/2, b+1/2, c | x, y, z	{ 1 ‖ 1 | 1/2 1/2 0 }
a+1/2, -b+1/2, -c | x, y, z	{ 1 ‖ 2100 | 1/2 1/2 0 }
-a+1/2, b+1/2, -c | x, y, z	{ 1 ‖ 2010 | 1/2 1/2 0 }
-a+1/2, -b+1/2, c | x, y, z	{ 1 ‖ 2001 | 1/2 1/2 0 }
a, b, c+1/2 | -x, -y, -z	{ -1 ‖ 1 | 0 0 1/2 }
a, -b, -c+1/2 | -x, -y, -z	{ -1 ‖ 2100 | 0 0 1/2 }
-a, b, -c+1/2 | -x, -y, -z	{ -1 ‖ 2010 | 0 0 1/2 }
-a, -b, c+1/2 | -x, -y, -z	{ -1 ‖ 2001 | 0 0 1/2 }
a, b+1/2, c | -x, -y, -z	{ -1 ‖ 1 | 0 1/2 0 }
a, -b+1/2, -c | -x, -y, -z	{ -1 ‖ 2100 | 0 1/2 0 }
-a, b+1/2, -c | -x, -y, -z	{ -1 ‖ 2010 | 0 1/2 0 }
-a, -b+1/2, c | -x, -y, -z	{ -1 ‖ 2001 | 0 1/2 0 }
a+1/2, b, c | -x, -y, -z	{ -1 ‖ 1 | 1/2 0 0 }
a+1/2, -b, -c | -x, -y, -z	{ -1 ‖ 2100 | 1/2 0 0 }
-a+1/2, b, -c | -x, -y, -z	{ -1 ‖ 2010 | 1/2 0 0 }
-a+1/2, -b, c | -x, -y, -z	{ -1 ‖ 2001 | 1/2 0 0 }
a+1/2, b+1/2, c+1/2 | -x, -y, -z	{ -1 ‖ 1 | 1/2 1/2 1/2 }
a+1/2, -b+1/2, -c+1/2 | -x, -y, -z	{ -1 ‖ 2100 | 1/2 1/2 1/2 }
-a+1/2, b+1/2, -c+1/2 | -x, -y, -z	{ -1 ‖ 2010 | 1/2 1/2 1/2 }
-a+1/2, -b+1/2, c+1/2 | -x, -y, -z	{ -1 ‖ 2001 | 1/2 1/2 1/2 }
a, b, c | -x, y, z	{ m ‖ 1 | 0 }
a, -b, -c | -x, y, z	{ m ‖ 2100 | 0 }
-a, b, -c | -x, y, z	{ m ‖ 2010 | 0 }
-a, -b, c | -x, y, z	{ m ‖ 2001 | 0 }
a, b+1/2, c+1/2 | -x, y, z	{ m ‖ 1 | 0 1/2 1/2 }
a, -b+1/2, -c+1/2 | -x, y, z	{ m ‖ 2100 | 0 1/2 1/2 }
-a, b+1/2, -c+1/2 | -x, y, z	{ m ‖ 2010 | 0 1/2 1/2 }
-a, -b+1/2, c+1/2 | -x, y, z	{ m ‖ 2001 | 0 1/2 1/2 }
a+1/2, b, c+1/2 | -x, y, z	{ m ‖ 1 | 1/2 0 1/2 }
a+1/2, -b, -c+1/2 | -x, y, z	{ m ‖ 2100 | 1/2 0 1/2 }
-a+1/2, b, -c+1/2 | -x, y, z	{ m ‖ 2010 | 1/2 0 1/2 }
-a+1/2, -b, c+1/2 | -x, y, z	{ m ‖ 2001 | 1/2 0 1/2 }
a+1/2, b+1/2, c | -x, y, z	{ m ‖ 1 | 1/2 1/2 0 }
a+1/2, -b+1/2, -c | -x, y, z	{ m ‖ 2100 | 1/2 1/2 0 }
-a+1/2, b+1/2, -c | -x, y, z	{ m ‖ 2010 | 1/2 1/2 0 }
-a+1/2, -b+1/2, c | -x, y, z	{ m ‖ 2001 | 1/2 1/2 0 }
a, b, c+1/2 | x, -y, -z	{ 2 ‖ 1 | 0 0 1/2 }
a, -b, -c+1/2 | x, -y, -z	{ 2 ‖ 2100 | 0 0 1/2 }
-a, b, -c+1/2 | x, -y, -z	{ 2 ‖ 2010 | 0 0 1/2 }
-a, -b, c+1/2 | x, -y, -z	{ 2 ‖ 2001 | 0 0 1/2 }
a, b+1/2, c | x, -y, -z	{ 2 ‖ 1 | 0 1/2 0 }
a, -b+1/2, -c | x, -y, -z	{ 2 ‖ 2100 | 0 1/2 0 }
-a, b+1/2, -c | x, -y, -z	{ 2 ‖ 2010 | 0 1/2 0 }
-a, -b+1/2, c | x, -y, -z	{ 2 ‖ 2001 | 0 1/2 0 }
a+1/2, b, c | x, -y, -z	{ 2 ‖ 1 | 1/2 0 0 }
a+1/2, -b, -c | x, -y, -z	{ 2 ‖ 2100 | 1/2 0 0 }
-a+1/2, b, -c | x, -y, -z	{ 2 ‖ 2010 | 1/2 0 0 }
-a+1/2, -b, c | x, -y, -z	{ 2 ‖ 2001 | 1/2 0 0 }
a+1/2, b+1/2, c+1/2 | x, -y, -z	{ 2 ‖ 1 | 1/2 1/2 1/2 }
a+1/2, -b+1/2, -c+1/2 | x, -y, -z	{ 2 ‖ 2100 | 1/2 1/2 1/2 }
-a+1/2, b+1/2, -c+1/2 | x, -y, -z	{ 2 ‖ 2010 | 1/2 1/2 1/2 }
-a+1/2, -b+1/2, c+1/2 | x, -y, -z	{ 2 ‖ 2001 | 1/2 1/2 1/2 }

Wyckoff Positions

WP	Site symmetry	Representative
8a	$\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{\infty m}{1}} $	(0,0,0 | 0,0,z)
8b	$\ce{^{1}{2}}\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(1/4,0,0 | 0,0,0)
8c	$\ce{^{-1}{2}}\ce{^{1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,1/4,0 | 0,0,0)
8d	$\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{1}{2}}\ce{^{\infty m}{1}} $	(0,0,1/4 | 0,0,0)
8e	$\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{1}{2}}\ce{^{\infty m}{1}} $	(1/4,1/4,0 | 0,0,0)
8f	$\ce{^{-1}{2}}\ce{^{1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(1/4,0,1/4 | 0,0,0)
8g	$\ce{^{1}{2}}\ce{^{-1}{2}}\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,1/4,1/4 | 0,0,0)
8h	$\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{\infty m}{1}} $	(1/4,1/4,1/4 | 0,0,z)
16i	$\ce{^{1}{2}}..\ce{^{\infty m}{1}} $	(a,0,0 | 0,0,z)
16j	$\ce{^{-1}{2}}..\ce{^{\infty m}{1}} $	(a,0,1/4 | 0,0,0)
16k	$\ce{^{-1}{2}}..\ce{^{\infty m}{1}} $	(a,1/4,0 | 0,0,0)
16l	$\ce{^{1}{2}}..\ce{^{\infty m}{1}} $	(a,1/4,1/4 | 0,0,z)
16m	$.\ce{^{1}{2}}.\ce{^{\infty m}{1}} $	(0,b,0 | 0,0,z)
16n	$.\ce{^{-1}{2}}.\ce{^{\infty m}{1}} $	(0,b,1/4 | 0,0,0)
16o	$.\ce{^{-1}{2}}.\ce{^{\infty m}{1}} $	(1/4,b,0 | 0,0,0)
16p	$.\ce{^{1}{2}}.\ce{^{\infty m}{1}} $	(1/4,b,1/4 | 0,0,z)
16q	$..\ce{^{1}{2}}\ce{^{\infty m}{1}} $	(0,0,c | 0,0,z)
16r	$..\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(1/4,0,c | 0,0,0)
16s	$..\ce{^{-1}{2}}\ce{^{\infty m}{1}} $	(0,1/4,c | 0,0,0)
16t	$..\ce{^{1}{2}}\ce{^{\infty m}{1}} $	(1/4,1/4,c | 0,0,z)
32u	$\ce{^{1}{1}}\ce{^{\infty m}{1}} $	(a,b,c | 0,0,z)

Spin Brillouin Zone & k-little co-groups

Wavevector-k	Little co-group
Γ:(0,0,0)	$\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{\infty /mm}{1}} $
T:(1,0,0)	$\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{\infty /mm}{1}} $
Y:(0,1,0)	$\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{\infty /mm}{1}} $
Z:(0,0,1)	$\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{1}{2}}\ce{^{\infty /mm}{1}} $
L:(1/2,1/2,1/2)	$\ce{^{1}{1}}\ce{^{\infty /mm}{1}} $
A:(u,0,1)	$\ce{^{1}{2}}\ce{^{m}{2}}\ce{^{m}{2}}\ce{^{\infty 2}{1}} $
B:(0,v,1)	$\ce{^{m}{2}}\ce{^{1}{2}}\ce{^{m}{2}}\ce{^{\infty 2}{1}} $
Δ:(0,v,0)	$\ce{^{m}{2}}\ce{^{1}{2}}\ce{^{m}{2}}\ce{^{\infty 2}{1}} $
H:(0,1,w)	$\ce{^{m}{2}}\ce{^{m}{2}}\ce{^{1}{2}}\ce{^{\infty 2}{1}} $
Λ:(0,0,w)	$\ce{^{m}{2}}\ce{^{m}{2}}\ce{^{1}{2}}\ce{^{\infty 2}{1}} $
Σ:(u,0,0)	$\ce{^{1}{2}}\ce{^{m}{2}}\ce{^{m}{2}}\ce{^{\infty 2}{1}} $
E:(0,v,w)	$\ce{^{m}{2}}\ce{^{\infty 2}{1}} $
J:(u,0,w)	$\ce{^{m}{2}}\ce{^{\infty 2}{1}} $
M:(u,v,0)	$\ce{^{m}{2}}\ce{^{\infty 2}{1}} $
GP:(u,v,w)	$\ce{^{1}{1}}\ce{^{\infty 2}{1}} $

Spin Brillouin Zone

Band Representations (Magnon)

8a

k-vector	A↑G(2)
Γ:(0,0,0)	$Γ_{1}^{S}(2) $
T:(1,0,0)	$T_{1}^{S}(2) $
Y:(0,1,0)	$Y_{1}^{S}(2) $
Z:(0,0,1)	$Z_{1}^{S}(2) $
L:(1/2,1/2,1/2)	$L_{1}^{S}(2) $
A:(u,0,1)	$A_{1}^{S}(2) $
B:(0,v,1)	$B_{1}^{S}(2) $
Δ:(0,v,0)	$Δ_{1}^{S}(2) $
H:(0,1,w)	$H_{1}^{S}(2) $
Λ:(0,0,w)	$Λ_{1}^{S}(2) $
Σ:(u,0,0)	$Σ_{1}^{S}(2) $
E:(0,v,w)	$E_{1}^{S}(2) $
J:(u,0,w)	$J_{1}^{S}(2) $
M:(u,v,0)	$M_{1}^{S}(2) $
GP:(u,v,w)	$GP_{1}^{S}(2) $

8h

k-vector	A↑G(2)
Γ:(0,0,0)	$Γ_{1}^{S}(2) $
T:(1,0,0)	$T_{3}^{S}(2) $
Y:(0,1,0)	$Y_{4}^{S}(2) $
Z:(0,0,1)	$Z_{2}^{S}(2) $
L:(1/2,1/2,1/2)	$L_{1}^{S}(2) $
A:(u,0,1)	$A_{2}^{S}(2) $
B:(0,v,1)	$B_{2}^{S}(2) $
Δ:(0,v,0)	$Δ_{1}^{S}(2) $
H:(0,1,w)	$H_{2}^{S}(2) $
Λ:(0,0,w)	$Λ_{1}^{S}(2) $
Σ:(u,0,0)	$Σ_{1}^{S}(2) $
E:(0,v,w)	$E_{1}^{S}(2) $
J:(u,0,w)	$J_{1}^{S}(2) $
M:(u,v,0)	$M_{1}^{S}(2) $
GP:(u,v,w)	$GP_{1}^{S}(2) $

16i

k-vector	A↑G(4)
Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{3}^{S}(2) $
T:(1,0,0)	$T_{1}^{S}(2)⊕T_{3}^{S}(2) $
Y:(0,1,0)	$Y_{1}^{S}(2)⊕Y_{3}^{S}(2) $
Z:(0,0,1)	$Z_{1}^{S}(2)⊕Z_{3}^{S}(2) $
L:(1/2,1/2,1/2)	$2L_{1}^{S}(2) $
A:(u,0,1)	$2A_{1}^{S}(2) $
B:(0,v,1)	$B_{1}^{S}(2)⊕B_{2}^{S}(2) $
Δ:(0,v,0)	$Δ_{1}^{S}(2)⊕Δ_{2}^{S}(2) $
H:(0,1,w)	$H_{1}^{S}(2)⊕H_{2}^{S}(2) $
Λ:(0,0,w)	$Λ_{1}^{S}(2)⊕Λ_{2}^{S}(2) $
Σ:(u,0,0)	$2Σ_{1}^{S}(2) $
E:(0,v,w)	$2E_{1}^{S}(2) $
J:(u,0,w)	$2J_{1}^{S}(2) $
M:(u,v,0)	$2M_{1}^{S}(2) $
GP:(u,v,w)	$2GP_{1}^{S}(2) $

16l

k-vector	A↑G(4)
Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{3}^{S}(2) $
T:(1,0,0)	$T_{1}^{S}(2)⊕T_{3}^{S}(2) $
Y:(0,1,0)	$Y_{2}^{S}(2)⊕Y_{4}^{S}(2) $
Z:(0,0,1)	$Z_{2}^{S}(2)⊕Z_{4}^{S}(2) $
L:(1/2,1/2,1/2)	$2L_{1}^{S}(2) $
A:(u,0,1)	$2A_{2}^{S}(2) $
B:(0,v,1)	$B_{1}^{S}(2)⊕B_{2}^{S}(2) $
Δ:(0,v,0)	$Δ_{1}^{S}(2)⊕Δ_{2}^{S}(2) $
H:(0,1,w)	$H_{1}^{S}(2)⊕H_{2}^{S}(2) $
Λ:(0,0,w)	$Λ_{1}^{S}(2)⊕Λ_{2}^{S}(2) $
Σ:(u,0,0)	$2Σ_{1}^{S}(2) $
E:(0,v,w)	$2E_{1}^{S}(2) $
J:(u,0,w)	$2J_{1}^{S}(2) $
M:(u,v,0)	$2M_{1}^{S}(2) $
GP:(u,v,w)	$2GP_{1}^{S}(2) $

16m

k-vector	A↑G(4)
Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{4}^{S}(2) $
T:(1,0,0)	$T_{1}^{S}(2)⊕T_{4}^{S}(2) $
Y:(0,1,0)	$Y_{1}^{S}(2)⊕Y_{4}^{S}(2) $
Z:(0,0,1)	$Z_{1}^{S}(2)⊕Z_{4}^{S}(2) $
L:(1/2,1/2,1/2)	$2L_{1}^{S}(2) $
A:(u,0,1)	$A_{1}^{S}(2)⊕A_{2}^{S}(2) $
B:(0,v,1)	$2B_{1}^{S}(2) $
Δ:(0,v,0)	$2Δ_{1}^{S}(2) $
H:(0,1,w)	$H_{1}^{S}(2)⊕H_{2}^{S}(2) $
Λ:(0,0,w)	$Λ_{1}^{S}(2)⊕Λ_{2}^{S}(2) $
Σ:(u,0,0)	$Σ_{1}^{S}(2)⊕Σ_{2}^{S}(2) $
E:(0,v,w)	$2E_{1}^{S}(2) $
J:(u,0,w)	$2J_{1}^{S}(2) $
M:(u,v,0)	$2M_{1}^{S}(2) $
GP:(u,v,w)	$2GP_{1}^{S}(2) $

16p

k-vector	A↑G(4)
Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{4}^{S}(2) $
T:(1,0,0)	$T_{2}^{S}(2)⊕T_{3}^{S}(2) $
Y:(0,1,0)	$Y_{1}^{S}(2)⊕Y_{4}^{S}(2) $
Z:(0,0,1)	$Z_{2}^{S}(2)⊕Z_{3}^{S}(2) $
L:(1/2,1/2,1/2)	$2L_{1}^{S}(2) $
A:(u,0,1)	$A_{1}^{S}(2)⊕A_{2}^{S}(2) $
B:(0,v,1)	$2B_{2}^{S}(2) $
Δ:(0,v,0)	$2Δ_{1}^{S}(2) $
H:(0,1,w)	$H_{1}^{S}(2)⊕H_{2}^{S}(2) $
Λ:(0,0,w)	$Λ_{1}^{S}(2)⊕Λ_{2}^{S}(2) $
Σ:(u,0,0)	$Σ_{1}^{S}(2)⊕Σ_{2}^{S}(2) $
E:(0,v,w)	$2E_{1}^{S}(2) $
J:(u,0,w)	$2J_{1}^{S}(2) $
M:(u,v,0)	$2M_{1}^{S}(2) $
GP:(u,v,w)	$2GP_{1}^{S}(2) $

16q

k-vector	A↑G(4)
Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{2}^{S}(2) $
T:(1,0,0)	$T_{1}^{S}(2)⊕T_{2}^{S}(2) $
Y:(0,1,0)	$Y_{1}^{S}(2)⊕Y_{2}^{S}(2) $
Z:(0,0,1)	$Z_{1}^{S}(2)⊕Z_{2}^{S}(2) $
L:(1/2,1/2,1/2)	$2L_{1}^{S}(2) $
A:(u,0,1)	$A_{1}^{S}(2)⊕A_{2}^{S}(2) $
B:(0,v,1)	$B_{1}^{S}(2)⊕B_{2}^{S}(2) $
Δ:(0,v,0)	$Δ_{1}^{S}(2)⊕Δ_{2}^{S}(2) $
H:(0,1,w)	$2H_{1}^{S}(2) $
Λ:(0,0,w)	$2Λ_{1}^{S}(2) $
Σ:(u,0,0)	$Σ_{1}^{S}(2)⊕Σ_{2}^{S}(2) $
E:(0,v,w)	$2E_{1}^{S}(2) $
J:(u,0,w)	$2J_{1}^{S}(2) $
M:(u,v,0)	$2M_{1}^{S}(2) $
GP:(u,v,w)	$2GP_{1}^{S}(2) $

16t

k-vector	A↑G(4)
Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{2}^{S}(2) $
T:(1,0,0)	$T_{3}^{S}(2)⊕T_{4}^{S}(2) $
Y:(0,1,0)	$Y_{3}^{S}(2)⊕Y_{4}^{S}(2) $
Z:(0,0,1)	$Z_{1}^{S}(2)⊕Z_{2}^{S}(2) $
L:(1/2,1/2,1/2)	$2L_{1}^{S}(2) $
A:(u,0,1)	$A_{1}^{S}(2)⊕A_{2}^{S}(2) $
B:(0,v,1)	$B_{1}^{S}(2)⊕B_{2}^{S}(2) $
Δ:(0,v,0)	$Δ_{1}^{S}(2)⊕Δ_{2}^{S}(2) $
H:(0,1,w)	$2H_{2}^{S}(2) $
Λ:(0,0,w)	$2Λ_{1}^{S}(2) $
Σ:(u,0,0)	$Σ_{1}^{S}(2)⊕Σ_{2}^{S}(2) $
E:(0,v,w)	$2E_{1}^{S}(2) $
J:(u,0,w)	$2J_{1}^{S}(2) $
M:(u,v,0)	$2M_{1}^{S}(2) $
GP:(u,v,w)	$2GP_{1}^{S}(2) $

32u

k-vector	A↑G(8)
Γ:(0,0,0)	$Γ_{1}^{S}(2)⊕Γ_{2}^{S}(2)⊕Γ_{3}^{S}(2)⊕Γ_{4}^{S}(2) $
T:(1,0,0)	$T_{1}^{S}(2)⊕T_{2}^{S}(2)⊕T_{3}^{S}(2)⊕T_{4}^{S}(2) $
Y:(0,1,0)	$Y_{1}^{S}(2)⊕Y_{2}^{S}(2)⊕Y_{3}^{S}(2)⊕Y_{4}^{S}(2) $
Z:(0,0,1)	$Z_{1}^{S}(2)⊕Z_{2}^{S}(2)⊕Z_{3}^{S}(2)⊕Z_{4}^{S}(2) $
L:(1/2,1/2,1/2)	$4L_{1}^{S}(2) $
A:(u,0,1)	$2A_{1}^{S}(2)⊕2A_{2}^{S}(2) $
B:(0,v,1)	$2B_{1}^{S}(2)⊕2B_{2}^{S}(2) $
Δ:(0,v,0)	$2Δ_{1}^{S}(2)⊕2Δ_{2}^{S}(2) $
H:(0,1,w)	$2H_{1}^{S}(2)⊕2H_{2}^{S}(2) $
Λ:(0,0,w)	$2Λ_{1}^{S}(2)⊕2Λ_{2}^{S}(2) $
Σ:(u,0,0)	$2Σ_{1}^{S}(2)⊕2Σ_{2}^{S}(2) $
E:(0,v,w)	$4E_{1}^{S}(2) $
J:(u,0,w)	$4J_{1}^{S}(2) $
M:(u,v,0)	$4M_{1}^{S}(2) $
GP:(u,v,w)	$4GP_{1}^{S}(2) $