-1/2 a^{c0,v1}_{a0,v0} b^{a3,v2}_{a1,a2} c^{a4}_{c1} lambda2^{a1,a2}_{a3,a4} a+(c1) a+(a0) a+(v0) a-(v2) a-(v1) a-(c0)
+a^{c0,v1}_{a1,v0} b^{a3,v2}_{a0,a2} c^{a4}_{c1} gamma1^{a2}_{a4} gamma1^{a1}_{a3} a+(c1) a+(a0) a+(v0) a-(v2) a-(v1) a-(c0)
+a^{c0,v1}_{a1,v0} b^{a3,v2}_{a0,a2} c^{a4}_{c1} lambda2^{a1,a2}_{a3,a4} a+(c1) a+(a0) a+(v0) a-(v2) a-(v1) a-(c0)