a^{c0,a0}_{a3,v0} b^{a1,v2}_{c1,v1} c^{a2,a4}_{c2,v2} gamma1^{a3}_{a4} a+(c1) a+(c2) a+(v0) a+(v1) a-(a2) a-(a1) a-(a0) a-(c0)
+1/2 a^{c0,a0}_{a3,v0} b^{a4,v2}_{c1,v1} c^{a1,a2}_{c2,v2} gamma1^{a3}_{a4} a+(c1) a+(c2) a+(v0) a+(v1) a-(a2) a-(a1) a-(a0) a-(c0)