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