1/48 a^{}_{c0,a0,a3,v0} b^{}_{c1,c2,c3,c4} c^{a4}_{a1,a2,v1} gamma1^{a3}_{a4} a+(c0) a+(c1) a+(c2) a+(c3) a+(c4) a+(a0) a+(a1) a+(a2) a+(v0) a+(v1)