-1/2 a^{c2,v0}_{c0,c1} b^{c3}_{a0} c^{a1}_{v0} gamma1^{a0}_{a1} a+(c0) a+(c1) a-(c3) a-(c2)
-a^{c1,v0}_{c0,c2} b^{c2}_{a0} c^{a1}_{v0} a+(c0) a+(a0) a-(a1) a-(c1)
-a^{c1,v0}_{c0,c2} b^{c2}_{a0} c^{a1}_{v0} gamma1^{a0}_{a1} a+(c0) a-(c1)
+a^{c1,v0}_{c0,c2} b^{c2}_{a0} c^{a1}_{v1} gamma1^{a0}_{a1} a+(c0) a+(v1) a-(v0) a-(c1)