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