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