1/2 a^{a0,v0}_{c3,a2} b^{c3,a1}_{c0,c1} c^{a3}_{c2} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(c2) a-(v0) a-(a1) a-(a0)
-1/2 a^{a0,v0}_{c3,a2} b^{c3,a3}_{c0,c1} c^{a1}_{c2} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(c2) a-(v0) a-(a1) a-(a0)