-1/288 a^{a0,a1,a5}_{} b^{}_{c0,c1,c2,c3} c^{}_{a2,a3,a4,a6} eta1^{a6}_{a5} a+(c0) a+(c1) a+(c2) a+(c3) a+(a2) a+(a3) a+(a4) a-(a1) a-(a0)
+1/96 a^{a0,a3,a4}_{} b^{}_{c0,c1,c2,c3} c^{}_{a1,a2,a5,a6} eta1^{a6}_{a4} eta1^{a5}_{a3} a+(c0) a+(c1) a+(c2) a+(c3) a+(a1) a+(a2) a-(a0)
+1/192 a^{a0,a3,a4}_{} b^{}_{c0,c1,c2,c3} c^{}_{a1,a2,a5,a6} lambda2^{a5,a6}_{a3,a4} a+(c0) a+(c1) a+(c2) a+(c3) a+(a1) a+(a2) a-(a0)
-1/144 a^{a1,a2,a3}_{} b^{}_{c0,c1,c2,c3} c^{}_{a0,a4,a5,a6} eta1^{a6}_{a3} eta1^{a5}_{a2} eta1^{a4}_{a1} a+(c0) a+(c1) a+(c2) a+(c3) a+(a0)
-1/96 a^{a1,a2,a3}_{} b^{}_{c0,c1,c2,c3} c^{}_{a0,a4,a5,a6} eta1^{a6}_{a3} lambda2^{a4,a5}_{a1,a2} a+(c0) a+(c1) a+(c2) a+(c3) a+(a0)
+1/864 a^{a1,a2,a3}_{} b^{}_{c0,c1,c2,c3} c^{}_{a0,a4,a5,a6} lambda3^{a4,a5,a6}_{a1,a2,a3} a+(c0) a+(c1) a+(c2) a+(c3) a+(a0)