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