-1/2 a^{c2,a0}_{c0,c1} b^{c3}_{c6} c^{c5,c6}_{c4,a1} eta1^{a1}_{a0} a+(c0) a+(c1) a+(c4) a-(c5) a-(c3) a-(c2)
-a^{c1,a0}_{c0,c4} b^{c2}_{c5} c^{c4,c5}_{c3,a1} a+(c0) a+(c3) a+(a1) a-(a0) a-(c2) a-(c1)
+a^{c1,a0}_{c0,c4} b^{c2}_{c5} c^{c4,c5}_{c3,a1} eta1^{a1}_{a0} a+(c0) a+(c3) a-(c2) a-(c1)
+a^{c1,a0}_{c0,c4} b^{c4}_{c5} c^{c3,c5}_{c2,a1} a+(c0) a+(c2) a+(a1) a-(a0) a-(c3) a-(c1)
-a^{c1,a0}_{c0,c4} b^{c4}_{c5} c^{c3,c5}_{c2,a1} eta1^{a1}_{a0} a+(c0) a+(c2) a-(c3) a-(c1)
+a^{c1,a0}_{c0,c6} b^{c3}_{c2} c^{c5,c6}_{c4,a1} eta1^{a1}_{a0} a+(c0) a+(c2) a+(c4) a-(c5) a-(c3) a-(c1)
+1/2 a^{c1,a0}_{c0,c6} b^{c6}_{c2} c^{c4,c5}_{c3,a1} eta1^{a1}_{a0} a+(c0) a+(c2) a+(c3) a-(c5) a-(c4) a-(c1)
+a^{c0,a0}_{c2,c3} b^{c2}_{c4} c^{c3,c4}_{c1,a1} a+(c1) a+(a1) a-(a0) a-(c0)
-a^{c0,a0}_{c2,c3} b^{c2}_{c4} c^{c3,c4}_{c1,a1} eta1^{a1}_{a0} a+(c1) a-(c0)
-1/2 a^{c0,a0}_{c4,c5} b^{c2}_{c1} c^{c4,c5}_{c3,a1} a+(c1) a+(c3) a+(a1) a-(a0) a-(c2) a-(c0)
+1/2 a^{c0,a0}_{c4,c5} b^{c2}_{c1} c^{c4,c5}_{c3,a1} eta1^{a1}_{a0} a+(c1) a+(c3) a-(c2) a-(c0)
+a^{c0,a0}_{c4,c5} b^{c4}_{c1} c^{c3,c5}_{c2,a1} a+(c1) a+(c2) a+(a1) a-(a0) a-(c3) a-(c0)
-a^{c0,a0}_{c4,c5} b^{c4}_{c1} c^{c3,c5}_{c2,a1} eta1^{a1}_{a0} a+(c1) a+(c2) a-(c3) a-(c0)