1/48 a^{c0,a0}_{} b^{}_{c1,c2,c3,c4} c^{a3,v0}_{a1,a2} lambda2^{a1,a2}_{a0,a3} a+(c1) a+(c2) a+(c3) a+(c4) a-(v0) a-(c0)
-1/24 a^{c0,a2}_{} b^{}_{c1,c2,c3,c4} c^{a1,v0}_{a0,a3} eta1^{a3}_{a2} a+(c1) a+(c2) a+(c3) a+(c4) a+(a0) a-(v0) a-(a1) a-(c0)