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