a^{v0}_{c0} b^{c1}_{c3} c^{c3,a0}_{c2,v0} a+(c0) a+(c2) a-(a0) a-(c1)
+a^{v0}_{c1} b^{c1}_{c2} c^{c2,a0}_{c0,v0} a+(c0) a-(a0)
-a^{v0}_{c1} b^{c1}_{c2} c^{c2,a0}_{c0,v1} a+(c0) a+(v1) a-(v0) a-(a0)
-a^{v0}_{c3} b^{c1}_{c0} c^{c3,a0}_{c2,v0} a+(c0) a+(c2) a-(a0) a-(c1)
+a^{v0}_{c3} b^{c3}_{c0} c^{c2,a0}_{c1,v0} a+(c0) a+(c1) a-(a0) a-(c2)