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