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