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