1/4 a^{a0,a1}_{c0,c1} b^{c2,c3}_{c5,a2} c^{c5}_{c4} eta1^{a2}_{a1} a+(c0) a+(c1) a+(c4) a-(a0) a-(c3) a-(c2)
-1/2 a^{a0,a1}_{c0,c3} b^{c1,c3}_{c4,a2} c^{c4}_{c2} a+(c0) a+(c2) a+(a2) a-(a1) a-(a0) a-(c1)
+a^{a0,a1}_{c0,c3} b^{c1,c3}_{c4,a2} c^{c4}_{c2} eta1^{a2}_{a1} a+(c0) a+(c2) a-(a0) a-(c1)
-1/2 a^{a0,a1}_{c0,c5} b^{c2,c3}_{c1,a2} c^{c5}_{c4} eta1^{a2}_{a1} a+(c0) a+(c1) a+(c4) a-(a0) a-(c3) a-(c2)
+a^{a0,a1}_{c0,c5} b^{c2,c5}_{c1,a2} c^{c4}_{c3} eta1^{a2}_{a1} a+(c0) a+(c1) a+(c3) a-(a0) a-(c4) a-(c2)
-1/4 a^{a0,a1}_{c1,c2} b^{c1,c2}_{c3,a2} c^{c3}_{c0} a+(c0) a+(a2) a-(a1) a-(a0)
+1/2 a^{a0,a1}_{c1,c2} b^{c1,c2}_{c3,a2} c^{c3}_{c0} eta1^{a2}_{a1} a+(c0) a-(a0)
-1/2 a^{a0,a1}_{c3,c4} b^{c1,c3}_{c0,a2} c^{c4}_{c2} a+(c0) a+(c2) a+(a2) a-(a1) a-(a0) a-(c1)
+a^{a0,a1}_{c3,c4} b^{c1,c3}_{c0,a2} c^{c4}_{c2} eta1^{a2}_{a1} a+(c0) a+(c2) a-(a0) a-(c1)
-1/4 a^{a0,a1}_{c3,c4} b^{c3,c4}_{c0,a2} c^{c2}_{c1} a+(c0) a+(c1) a+(a2) a-(a1) a-(a0) a-(c2)
+1/2 a^{a0,a1}_{c3,c4} b^{c3,c4}_{c0,a2} c^{c2}_{c1} eta1^{a2}_{a1} a+(c0) a+(c1) a-(a0) a-(c2)