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