a^{c0}_{v0} b^{a1,v2}_{a0,v1} c^{a3}_{a2} eta1^{a2}_{a1} gamma1^{a0}_{a3} a+(v0) a+(v1) a-(v2) a-(c0)
+a^{c0}_{v0} b^{a1,v2}_{a0,v1} c^{a3}_{a2} lambda2^{a0,a2}_{a1,a3} a+(v0) a+(v1) a-(v2) a-(c0)