1/12 a^{v0}_{a0,a1,a2} b^{a5}_{a3,a4,v0} a+(a0) a+(a1) a+(a2) a+(a3) a+(a4) a-(a5)
+1/4 a^{v0}_{a0,a1,a4} b^{a5}_{a2,a3,v0} gamma1^{a4}_{a5} a+(a0) a+(a1) a+(a2) a+(a3)
-1/4 a^{v0}_{a0,a1,a4} b^{a5}_{a2,a3,v1} gamma1^{a4}_{a5} a+(a0) a+(a1) a+(a2) a+(a3) a+(v1) a-(v0)