-a^{c0,v2}_{a0,v0} b^{c1}_{v1} c^{a1}_{v2} gamma1^{a0}_{a1} a+(v0) a+(v1) a-(c1) a-(c0)
+a^{c0,v2}_{a0,v0} b^{c1}_{v2} c^{a1}_{v1} gamma1^{a0}_{a1} a+(v0) a+(v1) a-(c1) a-(c0)