1/2 a^{c0}_{a0} b^{c1,a2}_{a1,v0} c^{a3,v1}_{c2,c3} gamma1^{a1}_{a3} gamma1^{a0}_{a2} a+(c2) a+(c3) a+(v0) a-(v1) a-(c1) a-(c0)
+1/2 a^{c0}_{a0} b^{c1,a2}_{a1,v0} c^{a3,v1}_{c2,c3} lambda2^{a0,a1}_{a2,a3} a+(c2) a+(c3) a+(v0) a-(v1) a-(c1) a-(c0)