a^{c0,a1}_{a0,v0} b^{c2,v1}_{c1,a2} c^{a3}_{c3} eta1^{a2}_{a1} gamma1^{a0}_{a3} a+(c1) a+(c3) a+(v0) a-(v1) a-(c2) a-(c0)
+a^{c0,a1}_{a0,v0} b^{c2,v1}_{c1,a2} c^{a3}_{c3} lambda2^{a0,a2}_{a1,a3} a+(c1) a+(c3) a+(v0) a-(v1) a-(c2) a-(c0)