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