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