1/2 a^{a0,a1}_{v0,v1} b^{c0}_{a2} c^{a4}_{a3} eta1^{a3}_{a1} gamma1^{a2}_{a4} a+(v0) a+(v1) a-(a0) a-(c0)
+1/2 a^{a0,a1}_{v0,v1} b^{c0}_{a2} c^{a4}_{a3} lambda2^{a2,a3}_{a1,a4} a+(v0) a+(v1) a-(a0) a-(c0)
+1/2 a^{a1,a2}_{v0,v1} b^{c0}_{a3} c^{a0}_{a4} eta1^{a4}_{a2} eta1^{a3}_{a1} a+(v0) a+(v1) a-(a0) a-(c0)
+1/4 a^{a1,a2}_{v0,v1} b^{c0}_{a3} c^{a0}_{a4} lambda2^{a3,a4}_{a1,a2} a+(v0) a+(v1) a-(a0) a-(c0)