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