1/4 a^{a3,v0}_{c0,a0} b^{c1,c2}_{a1,v0} c^{c3,c4}_{a2,a4} eta1^{a4}_{a3} a+(c0) a+(a0) a+(a1) a+(a2) a-(c4) a-(c3) a-(c2) a-(c1)
+1/8 a^{a3,v0}_{c0,a0} b^{c1,c2}_{a4,v0} c^{c3,c4}_{a1,a2} eta1^{a4}_{a3} a+(c0) a+(a0) a+(a1) a+(a2) a-(c4) a-(c3) a-(c2) a-(c1)
+1/4 a^{a1,v0}_{c3,a0} b^{c0,c1}_{a2,v0} c^{c2,c3}_{a3,a4} a+(a0) a+(a2) a+(a3) a+(a4) a-(a1) a-(c2) a-(c1) a-(c0)
+1/4 a^{a1,v0}_{c3,a0} b^{c0,c3}_{a2,v0} c^{c1,c2}_{a3,a4} a+(a0) a+(a2) a+(a3) a+(a4) a-(a1) a-(c2) a-(c1) a-(c0)
-1/2 a^{a3,v0}_{c3,a0} b^{c0,c1}_{a1,v0} c^{c2,c3}_{a2,a4} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a-(c2) a-(c1) a-(c0)
-1/2 a^{a3,v0}_{c3,a0} b^{c0,c3}_{a1,v0} c^{c1,c2}_{a2,a4} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a-(c2) a-(c1) a-(c0)
+1/2 a^{a3,v0}_{c3,a0} b^{c0,c1}_{a1,v1} c^{c2,c3}_{a2,a4} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a+(v1) a-(v0) a-(c2) a-(c1) a-(c0)
+1/2 a^{a3,v0}_{c3,a0} b^{c0,c3}_{a1,v1} c^{c1,c2}_{a2,a4} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a+(v1) a-(v0) a-(c2) a-(c1) a-(c0)
-1/4 a^{a3,v0}_{c3,a0} b^{c0,c1}_{a4,v0} c^{c2,c3}_{a1,a2} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a-(c2) a-(c1) a-(c0)
-1/4 a^{a3,v0}_{c3,a0} b^{c0,c3}_{a4,v0} c^{c1,c2}_{a1,a2} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a-(c2) a-(c1) a-(c0)
+1/4 a^{a3,v0}_{c3,a0} b^{c0,c1}_{a4,v1} c^{c2,c3}_{a1,a2} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a+(v1) a-(v0) a-(c2) a-(c1) a-(c0)
+1/4 a^{a3,v0}_{c3,a0} b^{c0,c3}_{a4,v1} c^{c1,c2}_{a1,a2} eta1^{a4}_{a3} a+(a0) a+(a1) a+(a2) a+(v1) a-(v0) a-(c2) a-(c1) a-(c0)