1/12 a^{a4}_{a0,a1,a2} b^{a7}_{a3,a5,a6} lambda2^{a5,a6}_{a4,a7} a+(a0) a+(a1) a+(a2) a+(a3)
+1/12 a^{a6}_{a0,a1,a2} b^{a5}_{a3,a4,a7} eta1^{a7}_{a6} a+(a0) a+(a1) a+(a2) a+(a3) a+(a4) a-(a5)
+1/4 a^{a5}_{a0,a1,a4} b^{a7}_{a2,a3,a6} eta1^{a6}_{a5} gamma1^{a4}_{a7} a+(a0) a+(a1) a+(a2) a+(a3)
+1/4 a^{a5}_{a0,a1,a4} b^{a7}_{a2,a3,a6} lambda2^{a4,a6}_{a5,a7} a+(a0) a+(a1) a+(a2) a+(a3)
-1/12 a^{a2}_{a0,a1,a6} b^{a7}_{a3,a4,a5} gamma1^{a6}_{a7} a+(a0) a+(a1) a+(a3) a+(a4) a+(a5) a-(a2)
+1/12 a^{a6}_{a0,a4,a5} b^{a7}_{a1,a2,a3} lambda2^{a4,a5}_{a6,a7} a+(a0) a+(a1) a+(a2) a+(a3)