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