1/4 a^{c0,a0,a1,a2}_{} b^{a5}_{c1,a3,a4} lambda2^{a3,a4}_{a2,a5} a+(c1) a-(a1) a-(a0) a-(c0)
+1/2 a^{c0,a0,a1,a4}_{} b^{a3}_{c1,a2,a5} eta1^{a5}_{a4} a+(c1) a+(a2) a-(a3) a-(a1) a-(a0) a-(c0)
+1/2 a^{c0,a0,a2,a3}_{} b^{a1}_{c1,a4,a5} eta1^{a5}_{a3} eta1^{a4}_{a2} a+(c1) a-(a1) a-(a0) a-(c0)
+1/4 a^{c0,a0,a2,a3}_{} b^{a1}_{c1,a4,a5} lambda2^{a4,a5}_{a2,a3} a+(c1) a-(a1) a-(a0) a-(c0)