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