-1/4 a^{c0,a2}_{a0,a1} b^{a3}_{c1} c^{c1,v2}_{v0,v1} lambda2^{a0,a1}_{a2,a3} a+(v0) a+(v1) a-(v2) a-(c0)
+1/4 a^{c0,a2}_{a0,a1} b^{a3}_{c1} c^{c2,v2}_{v0,v1} lambda2^{a0,a1}_{a2,a3} a+(c1) a+(v0) a+(v1) a-(v2) a-(c2) a-(c0)
+1/2 a^{c0,a1}_{a0,a2} b^{a3}_{c1} c^{c1,v2}_{v0,v1} gamma1^{a2}_{a3} a+(a0) a+(v0) a+(v1) a-(v2) a-(a1) a-(c0)