-1/2 a^{}_{} b^{c0,v0}_{a0,a2} c^{a4,a5}_{a1,a3} lambda2^{a2,a3}_{a4,a5} a+(a0) a+(a1) a-(v0) a-(c0)
+1/4 a^{}_{} b^{c0,v0}_{a2,a3} c^{a4,a5}_{a0,a1} gamma1^{a3}_{a5} gamma1^{a2}_{a4} a+(a0) a+(a1) a-(v0) a-(c0)
+1/8 a^{}_{} b^{c0,v0}_{a2,a3} c^{a4,a5}_{a0,a1} lambda2^{a2,a3}_{a4,a5} a+(a0) a+(a1) a-(v0) a-(c0)