1/4 a^{c0}_{a0} b^{c1,c2}_{c3,a1} c^{c3,a2}_{v0,v1} gamma1^{a1}_{a2} a+(a0) a+(v0) a+(v1) a-(c2) a-(c1) a-(c0)
-1/4 a^{c0}_{a1} b^{c1,c2}_{c3,a0} c^{c3,a2}_{v0,v1} gamma1^{a1}_{a2} a+(a0) a+(v0) a+(v1) a-(c2) a-(c1) a-(c0)