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