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