1/4 a^{a1,a2}_{a0,a3} b^{v2,v3}_{v0,v1} c^{a4}_{v3} gamma1^{a3}_{a4} a+(a0) a+(v0) a+(v1) a-(v2) a-(a2) a-(a1)
-1/4 a^{a0,a3}_{a1,a2} b^{v2,v3}_{v0,v1} c^{a4}_{v3} lambda2^{a1,a2}_{a3,a4} a+(v0) a+(v1) a-(v2) a-(a0)
+1/8 a^{a0,a3}_{a1,a2} b^{v2,v3}_{v0,v1} c^{a4}_{v4} lambda2^{a1,a2}_{a3,a4} a+(v0) a+(v1) a+(v4) a-(v3) a-(v2) a-(a0)