-1/4 a^{c0,a0}_{c3,a2} b^{c3,a1}_{v0,v1} c^{a3,v2}_{c1,c2} gamma1^{a2}_{a3} a+(c1) a+(c2) a+(v0) a+(v1) a-(v2) a-(a1) a-(a0) a-(c0)
+1/4 a^{c0,a0}_{c3,a2} b^{c3,a3}_{v0,v1} c^{a1,v2}_{c1,c2} gamma1^{a2}_{a3} a+(c1) a+(c2) a+(v0) a+(v1) a-(v2) a-(a1) a-(a0) a-(c0)