-a^{c1,v0}_{c0,c4} b^{c2}_{v0} c^{c4}_{c3} a+(c0) a+(c3) a-(c2) a-(c1)
+a^{c1,v0}_{c0,c4} b^{c4}_{v0} c^{c3}_{c2} a+(c0) a+(c2) a-(c3) a-(c1)
+a^{c0,v0}_{c2,c3} b^{c2}_{v0} c^{c3}_{c1} a+(c1) a-(c0)
-a^{c0,v0}_{c2,c3} b^{c2}_{v1} c^{c3}_{c1} a+(c1) a+(v1) a-(v0) a-(c0)