1/12 a^{}_{a0,a1,a2,a3} b^{a5,a6}_{a4} lambda2^{a3,a4}_{a5,a6} a+(a0) a+(a1) a+(a2)
-1/6 a^{}_{a0,a1,a2,a5} b^{a4,a6}_{a3} gamma1^{a5}_{a6} a+(a0) a+(a1) a+(a2) a+(a3) a-(a4)
+1/4 a^{}_{a0,a1,a3,a4} b^{a5,a6}_{a2} gamma1^{a4}_{a6} gamma1^{a3}_{a5} a+(a0) a+(a1) a+(a2)
+1/8 a^{}_{a0,a1,a3,a4} b^{a5,a6}_{a2} lambda2^{a3,a4}_{a5,a6} a+(a0) a+(a1) a+(a2)