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