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