{j1j2j31j3-1j2-1}=(-1)J⁢(J⁢(J+1)⁢(J-2⁢j1)⁢(J-2⁢j1-1)(2⁢j2-1)⁢2⁢j2⁢(2⁢j2+1)⁢(2⁢j3-1)⁢2⁢j3⁢(2⁢j3+1))12,