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