1/2 a^{}_{a0,a1,a2,v0} b^{c0,a3,a4}_{v1} gamma1^{a2}_{a4} gamma1^{a1}_{a3} a+(a0) a+(v0) a+(v1) a-(c0)
+1/4 a^{}_{a0,a1,a2,v0} b^{c0,a3,a4}_{v1} lambda2^{a1,a2}_{a3,a4} a+(a0) a+(v0) a+(v1) a-(c0)
+1/2 a^{}_{a0,a1,a3,v0} b^{c0,a2,a4}_{v1} gamma1^{a3}_{a4} a+(a0) a+(a1) a+(v0) a+(v1) a-(a2) a-(c0)