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