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