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