-1/4 a^{c0,v2}_{a3,v0} b^{a0,a1}_{v1,v2} c^{a2,a4}_{c1,c2} gamma1^{a3}_{a4} a+(c1) a+(c2) a+(v0) a+(v1) a-(a2) a-(a1) a-(a0) a-(c0)
-1/4 a^{c0,v2}_{a3,v0} b^{a0,a4}_{v1,v2} c^{a1,a2}_{c1,c2} gamma1^{a3}_{a4} a+(c1) a+(c2) a+(v0) a+(v1) a-(a2) a-(a1) a-(a0) a-(c0)