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