-1/2 a^{a0,v0}_{a1,a2} b^{a3,v1}_{c0,c1} c^{a4}_{c2} gamma1^{a2}_{a4} gamma1^{a1}_{a3} a+(c0) a+(c1) a+(c2) a-(v1) a-(v0) a-(a0)
-1/4 a^{a0,v0}_{a1,a2} b^{a3,v1}_{c0,c1} c^{a4}_{c2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a+(c2) a-(v1) a-(v0) a-(a0)
+1/4 a^{a3,v0}_{a1,a2} b^{a0,v1}_{c0,c1} c^{a4}_{c2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a+(c2) a-(v1) a-(v0) a-(a0)
-1/4 a^{a3,v0}_{a1,a2} b^{a4,v1}_{c0,c1} c^{a0}_{c2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a+(c2) a-(v1) a-(v0) a-(a0)