-1/2 a^{a1,a2}_{a0,a3} b^{v2}_{v0} c^{c0,a4}_{v1,v2} gamma1^{a3}_{a4} a+(a0) a+(v0) a+(v1) a-(a2) a-(a1) a-(c0)
+1/4 a^{a0,a3}_{a1,a2} b^{v1}_{v0} c^{c0,a4}_{v2,v3} lambda2^{a1,a2}_{a3,a4} a+(v0) a+(v2) a+(v3) a-(v1) a-(a0) a-(c0)
-1/2 a^{a0,a3}_{a1,a2} b^{v2}_{v0} c^{c0,a4}_{v1,v2} lambda2^{a1,a2}_{a3,a4} a+(v0) a+(v1) a-(a0) a-(c0)