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