1/4 a^{a3}_{c0,c1,a0} b^{a1,a2}_{c2,a4} eta1^{a4}_{a3} a+(c0) a+(c1) a+(c2) a+(a0) a-(a2) a-(a1)
-1/4 a^{a0}_{c0,c1,a1} b^{a3,a4}_{c2,a2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a+(c2) a-(a0)
+1/2 a^{a2}_{c0,c1,a1} b^{a0,a4}_{c2,a3} eta1^{a3}_{a2} gamma1^{a1}_{a4} a+(c0) a+(c1) a+(c2) a-(a0)
+1/2 a^{a2}_{c0,c1,a1} b^{a0,a4}_{c2,a3} lambda2^{a1,a3}_{a2,a4} a+(c0) a+(c1) a+(c2) a-(a0)
+1/2 a^{a0}_{c0,c1,a3} b^{a2,a4}_{c2,a1} gamma1^{a3}_{a4} a+(c0) a+(c1) a+(c2) a+(a1) a-(a2) a-(a0)