-a^{v0}_{c0} b^{c1}_{a1} c^{a0,a2}_{c2,v0} gamma1^{a1}_{a2} a+(c0) a+(c2) a-(a0) a-(c1)
-1/2 a^{v0}_{c1} b^{c1}_{a0} c^{a1,a2}_{c0,v0} a+(c0) a+(a0) a-(a2) a-(a1)
-a^{v0}_{c1} b^{c1}_{a1} c^{a0,a2}_{c0,v0} gamma1^{a1}_{a2} a+(c0) a-(a0)
+a^{v0}_{c1} b^{c1}_{a1} c^{a0,a2}_{c0,v1} gamma1^{a1}_{a2} a+(c0) a+(v1) a-(v0) a-(a0)