1/8 a^{a1,a2}_{v0,v1} b^{c0}_{a0} c^{c1,c2}_{a3,a4} eta1^{a4}_{a2} eta1^{a3}_{a1} a+(a0) a+(v0) a+(v1) a-(c2) a-(c1) a-(c0)
+1/16 a^{a1,a2}_{v0,v1} b^{c0}_{a0} c^{c1,c2}_{a3,a4} lambda2^{a3,a4}_{a1,a2} a+(a0) a+(v0) a+(v1) a-(c2) a-(c1) a-(c0)
-1/4 a^{a1,a2}_{v0,v1} b^{c0}_{a3} c^{c1,c2}_{a0,a4} eta1^{a4}_{a2} eta1^{a3}_{a1} a+(a0) a+(v0) a+(v1) a-(c2) a-(c1) a-(c0)
-1/8 a^{a1,a2}_{v0,v1} b^{c0}_{a3} c^{c1,c2}_{a0,a4} lambda2^{a3,a4}_{a1,a2} a+(a0) a+(v0) a+(v1) a-(c2) a-(c1) a-(c0)