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