-a^{a0,v0}_{c0,c3} b^{c3,a1}_{c1,a2} c^{a3}_{c2} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(c2) a-(v0) a-(a1) a-(a0)
+a^{a2,v0}_{c0,c3} b^{c3,a0}_{c1,a3} c^{a1}_{c2} eta1^{a3}_{a2} a+(c0) a+(c1) a+(c2) a-(v0) a-(a1) a-(a0)