-1/6 a^{a1,a2}_{c0,a0} b^{c1,c2,c3}_{a3} eta1^{a3}_{a2} a+(c0) a+(a0) a-(a1) a-(c3) a-(c2) a-(c1)
+1/12 a^{a1,a2}_{c0,a0} b^{c1,c2,c3}_{a3} lambda2^{a0,a3}_{a1,a2} a+(c0) a-(c3) a-(c2) a-(c1)
+1/4 a^{a1,a2}_{c2,a0} b^{c0,c1,c2}_{a3} a+(a0) a+(a3) a-(a2) a-(a1) a-(c1) a-(c0)
-1/2 a^{a1,a2}_{c2,a0} b^{c0,c1,c2}_{a3} eta1^{a3}_{a2} a+(a0) a-(a1) a-(c1) a-(c0)
+1/4 a^{a1,a2}_{c2,a0} b^{c0,c1,c2}_{a3} lambda2^{a0,a3}_{a1,a2} a-(c1) a-(c0)