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