-1/4 a^{a0,v0}_{c0,c1} b^{a1}_{v0} c^{c3,c4}_{c2,a2} eta1^{a2}_{a1} a+(c0) a+(c1) a+(c2) a-(a0) a-(c4) a-(c3)
+1/4 a^{a1,v0}_{c0,c1} b^{a0}_{v0} c^{c3,c4}_{c2,a2} eta1^{a2}_{a1} a+(c0) a+(c1) a+(c2) a-(a0) a-(c4) a-(c3)
+a^{a0,v0}_{c0,c3} b^{a1}_{v0} c^{c2,c3}_{c1,a2} a+(c0) a+(c1) a+(a2) a-(a1) a-(a0) a-(c2)
-a^{a0,v0}_{c0,c3} b^{a1}_{v0} c^{c2,c3}_{c1,a2} eta1^{a2}_{a1} a+(c0) a+(c1) a-(a0) a-(c2)
+a^{a0,v0}_{c0,c3} b^{a1}_{v1} c^{c2,c3}_{c1,a2} eta1^{a2}_{a1} a+(c0) a+(c1) a+(v1) a-(v0) a-(a0) a-(c2)
+a^{a1,v0}_{c0,c3} b^{a0}_{v0} c^{c2,c3}_{c1,a2} eta1^{a2}_{a1} a+(c0) a+(c1) a-(a0) a-(c2)
-a^{a1,v0}_{c0,c3} b^{a0}_{v1} c^{c2,c3}_{c1,a2} eta1^{a2}_{a1} a+(c0) a+(c1) a+(v1) a-(v0) a-(a0) a-(c2)
+1/2 a^{a0,v0}_{c1,c2} b^{a1}_{v0} c^{c1,c2}_{c0,a2} a+(c0) a+(a2) a-(a1) a-(a0)
-1/2 a^{a0,v0}_{c1,c2} b^{a1}_{v0} c^{c1,c2}_{c0,a2} eta1^{a2}_{a1} a+(c0) a-(a0)
-1/2 a^{a0,v0}_{c1,c2} b^{a1}_{v1} c^{c1,c2}_{c0,a2} a+(c0) a+(a2) a+(v1) a-(v0) a-(a1) a-(a0)
+1/2 a^{a0,v0}_{c1,c2} b^{a1}_{v1} c^{c1,c2}_{c0,a2} eta1^{a2}_{a1} a+(c0) a+(v1) a-(v0) a-(a0)
+1/2 a^{a1,v0}_{c1,c2} b^{a0}_{v0} c^{c1,c2}_{c0,a2} eta1^{a2}_{a1} a+(c0) a-(a0)
-1/2 a^{a1,v0}_{c1,c2} b^{a0}_{v1} c^{c1,c2}_{c0,a2} eta1^{a2}_{a1} a+(c0) a+(v1) a-(v0) a-(a0)