1/4 a^{c0,v0}_{a0,a1} b^{}_{} c^{a2,a3}_{c1,c2} gamma1^{a1}_{a3} gamma1^{a0}_{a2} a+(c1) a+(c2) a-(v0) a-(c0)
+1/8 a^{c0,v0}_{a0,a1} b^{}_{} c^{a2,a3}_{c1,c2} lambda2^{a0,a1}_{a2,a3} a+(c1) a+(c2) a-(v0) a-(c0)