a^{c0}_{a0} b^{v1}_{a1} c^{c1,a2}_{v0,v1} gamma1^{a1}_{a2} a+(a0) a+(v0) a-(c1) a-(c0)
-a^{c0}_{a1} b^{v1}_{a0} c^{c1,a2}_{v0,v1} gamma1^{a1}_{a2} a+(a0) a+(v0) a-(c1) a-(c0)