-1/4 a^{v1}_{v0} b^{a0,a3}_{a1,a2} c^{a4,v4}_{v2,v3} lambda2^{a1,a2}_{a3,a4} a+(v0) a+(v2) a+(v3) a-(v4) a-(v1) a-(a0)
+1/2 a^{v3}_{v0} b^{a1,a2}_{a0,a3} c^{a4,v2}_{v1,v3} gamma1^{a3}_{a4} a+(a0) a+(v0) a+(v1) a-(v2) a-(a2) a-(a1)
-1/2 a^{v3}_{v0} b^{a0,a3}_{a1,a2} c^{a4,v2}_{v1,v3} lambda2^{a1,a2}_{a3,a4} a+(v0) a+(v1) a-(v2) a-(a0)