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