-1/2 a^{c1,v0}_{c0,a1} b^{a0}_{c2} c^{a3,a4}_{c3,a2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c2) a+(c3) a-(v0) a-(a0) a-(c1)
+a^{c1,v0}_{c0,a1} b^{a2}_{c2} c^{a0,a4}_{c3,a3} eta1^{a3}_{a2} gamma1^{a1}_{a4} a+(c0) a+(c2) a+(c3) a-(v0) a-(a0) a-(c1)
+a^{c1,v0}_{c0,a1} b^{a2}_{c2} c^{a0,a4}_{c3,a3} lambda2^{a1,a3}_{a2,a4} a+(c0) a+(c2) a+(c3) a-(v0) a-(a0) a-(c1)