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