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