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