-1/2 a^{a0}_{v0} b^{a2}_{v1} c^{a1,a5}_{a3,a4} lambda2^{a3,a4}_{a2,a5} a+(v0) a+(v1) a-(a1) a-(a0)
+1/2 a^{a2}_{v0} b^{a0}_{v1} c^{a1,a5}_{a3,a4} lambda2^{a3,a4}_{a2,a5} a+(v0) a+(v1) a-(a1) a-(a0)
+1/2 a^{a2}_{v0} b^{a3}_{v1} c^{a0,a1}_{a4,a5} eta1^{a5}_{a3} eta1^{a4}_{a2} a+(v0) a+(v1) a-(a1) a-(a0)
+1/4 a^{a2}_{v0} b^{a3}_{v1} c^{a0,a1}_{a4,a5} lambda2^{a4,a5}_{a2,a3} a+(v0) a+(v1) a-(a1) a-(a0)