{j1j2j3l1l2l3}=∑mr⁢ms′(-1)l1+m1′+l2+m2′+l3+m3′⁢(j1j2j3m1m2m3)⁢(j1l2l3m1m2′-m3′)⁢(l1j2l3-m1′m2m3′)⁢(l1l2j3m1′-m2′m3),