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