-1/4 a^{a2}_{a0,a1} b^{c2,a3}_{c0,c1} lambda2^{a0,a1}_{a2,a3} a+(c0) a+(c1) a-(c2)
-1/2 a^{a1}_{a0,a2} b^{c2,a3}_{c0,c1} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(a0) a-(a1) a-(c2)