1/2 a^{c0,a0,a1}_{v0} b^{c1,a4}_{a2,a3} lambda2^{a2,a3}_{a1,a4} a+(v0) a-(a0) a-(c1) a-(c0)
-a^{c0,a0,a3}_{v0} b^{c1,a2}_{a1,a4} eta1^{a4}_{a3} a+(a1) a+(v0) a-(a2) a-(a0) a-(c1) a-(c0)
+1/2 a^{c0,a1,a2}_{v0} b^{c1,a0}_{a3,a4} eta1^{a4}_{a2} eta1^{a3}_{a1} a+(v0) a-(a0) a-(c1) a-(c0)
+1/4 a^{c0,a1,a2}_{v0} b^{c1,a0}_{a3,a4} lambda2^{a3,a4}_{a1,a2} a+(v0) a-(a0) a-(c1) a-(c0)