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