1/2 a^{v0}_{c0} b^{a1,a2}_{a0,a3} c^{a4}_{v0} gamma1^{a3}_{a4} a+(c0) a+(a0) a-(a2) a-(a1)
+1/2 a^{v0}_{c0} b^{a0,a3}_{a1,a2} c^{a4}_{v0} lambda2^{a1,a2}_{a3,a4} a+(c0) a-(a0)
-1/2 a^{v0}_{c0} b^{a0,a3}_{a1,a2} c^{a4}_{v1} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(v1) a-(v0) a-(a0)