1/4 a^{c1}_{c0} b^{a0,a1}_{c2,c3} c^{a4,v0}_{a2,a3} lambda2^{a2,a3}_{a1,a4} a+(c0) a+(c2) a+(c3) a-(v0) a-(a0) a-(c1)
+1/4 a^{c1}_{c0} b^{a1,a2}_{c2,c3} c^{a0,v0}_{a3,a4} eta1^{a4}_{a2} eta1^{a3}_{a1} a+(c0) a+(c2) a+(c3) a-(v0) a-(a0) a-(c1)
+1/8 a^{c1}_{c0} b^{a1,a2}_{c2,c3} c^{a0,v0}_{a3,a4} lambda2^{a3,a4}_{a1,a2} a+(c0) a+(c2) a+(c3) a-(v0) a-(a0) a-(c1)