-1/4 a^{a0,a1}_{a2,v0} b^{}_{} c^{a4,a5}_{a3,v1} lambda2^{a2,a3}_{a4,a5} a+(v0) a+(v1) a-(a1) a-(a0)
+a^{a0,a3}_{a2,v0} b^{}_{} c^{a1,a5}_{a4,v1} eta1^{a4}_{a3} gamma1^{a2}_{a5} a+(v0) a+(v1) a-(a1) a-(a0)
+a^{a0,a3}_{a2,v0} b^{}_{} c^{a1,a5}_{a4,v1} lambda2^{a2,a4}_{a3,a5} a+(v0) a+(v1) a-(a1) a-(a0)
-1/4 a^{a3,a4}_{a2,v0} b^{}_{} c^{a0,a1}_{a5,v1} lambda2^{a2,a5}_{a3,a4} a+(v0) a+(v1) a-(a1) a-(a0)