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