-1/48 a^{a0}_{c0} b^{}_{c1,c2,c3,c4} c^{a3}_{a1,a2} lambda2^{a1,a2}_{a0,a3} a+(c0) a+(c1) a+(c2) a+(c3) a+(c4)
-1/24 a^{a2}_{c0} b^{}_{c1,c2,c3,c4} c^{a1}_{a0,a3} eta1^{a3}_{a2} a+(c0) a+(c1) a+(c2) a+(c3) a+(c4) a+(a0) a-(a1)