-a^{c0,v1}_{a1,v0} b^{v2}_{c1} c^{a0,a2}_{c2,v2} gamma1^{a1}_{a2} a+(c1) a+(c2) a+(v0) a-(v1) a-(a0) a-(c0)
+a^{c0,v2}_{a1,v0} b^{v1}_{c1} c^{a0,a2}_{c2,v2} gamma1^{a1}_{a2} a+(c1) a+(c2) a+(v0) a-(v1) a-(a0) a-(c0)