1/4 a^{}_{} b^{a0,v0}_{a1,a2} c^{a3,a4}_{c0,c1} gamma1^{a2}_{a4} gamma1^{a1}_{a3} a+(c0) a+(c1) a-(v0) a-(a0)
+1/8 a^{}_{} b^{a0,v0}_{a1,a2} c^{a3,a4}_{c0,c1} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a-(v0) a-(a0)
-1/4 a^{}_{} b^{a3,v0}_{a1,a2} c^{a0,a4}_{c0,c1} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a-(v0) a-(a0)