1/4 a^{a0,a1}_{c0,a4} b^{a2,v0}_{c1,c2} c^{a3,a5}_{c3,v0} gamma1^{a4}_{a5} a+(c0) a+(c1) a+(c2) a+(c3) a-(a3) a-(a2) a-(a1) a-(a0)
+1/8 a^{a0,a1}_{c0,a4} b^{a5,v0}_{c1,c2} c^{a2,a3}_{c3,v0} gamma1^{a4}_{a5} a+(c0) a+(c1) a+(c2) a+(c3) a-(a3) a-(a2) a-(a1) a-(a0)