-a^{v0}_{c2} b^{c0}_{a1} c^{c2,a2}_{c1,a0} gamma1^{a1}_{a2} a+(c1) a+(a0) a-(v0) a-(c0)
+a^{v0}_{c2} b^{c2}_{a1} c^{c1,a2}_{c0,a0} gamma1^{a1}_{a2} a+(c0) a+(a0) a-(v0) a-(c1)