1/12 a^{a2}_{c0,a0,a1} b^{a3}_{c1,c2,c3} lambda2^{a0,a1}_{a2,a3} a+(c0) a+(c1) a+(c2) a+(c3)
+1/6 a^{a1}_{c0,a0,a2} b^{a3}_{c1,c2,c3} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(c2) a+(c3) a+(a0) a-(a1)