j1j2j3j2j1l3=-1j1+j2+j3+l3⁢4π⁢2⁢j1+1⁢2⁢j2+1⁢2⁢l3+1⁢sin⁡θ12⁢cos⁡l3+12⁢θ-14⁢π+o⁡1,