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