s1,3(4)⁢d1,3(4)⁢c2,3(4)⁢c3,3(4)+s2,3(4)⁢d2,3(4)⁢c3,3(4)⁢c1,3(4)+s3,3(4)⁢d3,3(4)⁢c1,3(4)⁢c2,3(4)=κ21-κ2⁢(s1,3(4)⁢d1,3(4)+s2,3(4)⁢d2,3(4)+s2,3(4)⁢d2,3(4)).