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