a^{c0}_{a1} b^{c1,a0}_{c3,v0} c^{c3,a2}_{c2,v1} gamma1^{a1}_{a2} a+(c2) a+(v0) a+(v1) a-(a0) a-(c1) a-(c0)
-a^{c0}_{a1} b^{c1,a2}_{c3,v0} c^{c3,a0}_{c2,v1} gamma1^{a1}_{a2} a+(c2) a+(v0) a+(v1) a-(a0) a-(c1) a-(c0)