-1/2 a^{a0}_{c0,c1,a1} b^{c3,a2}_{c2,v0} gamma1^{a1}_{a2} a+(c0) a+(c1) a+(c2) a+(v0) a-(a0) a-(c3)
-a^{a1}_{c0,c2,a0} b^{c2,a2}_{c1,v0} a+(c0) a+(c1) a+(a0) a+(v0) a-(a2) a-(a1)
+a^{a0}_{c0,c2,a1} b^{c2,a2}_{c1,v0} gamma1^{a1}_{a2} a+(c0) a+(c1) a+(v0) a-(a0)