1/2 a^{c1}_{c0} b^{a0,v0}_{c4,a1} c^{c4,a2}_{c2,c3} gamma1^{a1}_{a2} a+(c0) a+(c2) a+(c3) a-(v0) a-(a0) a-(c1)
-1/2 a^{c0}_{c4} b^{a0,v0}_{c1,a1} c^{c4,a2}_{c2,c3} gamma1^{a1}_{a2} a+(c1) a+(c2) a+(c3) a-(v0) a-(a0) a-(c0)