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