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