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