-a^{c0}_{a0} b^{c2,a1}_{c1,c3} c^{c3}_{a2} eta1^{a2}_{a1} a+(c1) a+(a0) a-(c2) a-(c0)
-a^{c0}_{a1} b^{c2,a2}_{c1,c3} c^{c3}_{a0} gamma1^{a1}_{a2} a+(c1) a+(a0) a-(c2) a-(c0)