-1/2 a^{a0,a2}_{c0,a1} b^{v0,v1}_{c1,a3} c^{a4}_{c2} eta1^{a3}_{a2} gamma1^{a1}_{a4} a+(c0) a+(c1) a+(c2) a-(v1) a-(v0) a-(a0)
-1/2 a^{a0,a2}_{c0,a1} b^{v0,v1}_{c1,a3} c^{a4}_{c2} lambda2^{a1,a3}_{a2,a4} a+(c0) a+(c1) a+(c2) a-(v1) a-(v0) a-(a0)
-1/4 a^{a2,a3}_{c0,a1} b^{v0,v1}_{c1,a4} c^{a0}_{c2} lambda2^{a1,a4}_{a2,a3} a+(c0) a+(c1) a+(c2) a-(v1) a-(v0) a-(a0)