-a^{c0,v0}_{c3,a0} b^{c3,v1}_{c1,a1} c^{a2}_{c2} gamma1^{a1}_{a2} a+(c1) a+(c2) a+(a0) a-(v1) a-(v0) a-(c0)
+a^{c0,v0}_{c3,a1} b^{c3,v1}_{c1,a0} c^{a2}_{c2} gamma1^{a1}_{a2} a+(c1) a+(c2) a+(a0) a-(v1) a-(v0) a-(c0)