-1/4 a^{a1,a2}_{a0,v0} b^{c1}_{c0} c^{c3,c4}_{c2,a3} lambda2^{a0,a3}_{a1,a2} a+(c0) a+(c2) a+(v0) a-(c4) a-(c3) a-(c1)
-a^{a1,a2}_{a0,v0} b^{c0}_{c3} c^{c2,c3}_{c1,a3} eta1^{a3}_{a2} a+(c1) a+(a0) a+(v0) a-(a1) a-(c2) a-(c0)
-1/2 a^{a1,a2}_{a0,v0} b^{c0}_{c3} c^{c2,c3}_{c1,a3} lambda2^{a0,a3}_{a1,a2} a+(c1) a+(v0) a-(c2) a-(c0)