-1/2 a^{c0,v1}_{a0,v0} b^{v2}_{a1} c^{a2,a3}_{c1,c2} gamma1^{a1}_{a3} gamma1^{a0}_{a2} a+(c1) a+(c2) a+(v0) a-(v2) a-(v1) a-(c0)
-1/4 a^{c0,v1}_{a0,v0} b^{v2}_{a1} c^{a2,a3}_{c1,c2} lambda2^{a0,a1}_{a2,a3} a+(c1) a+(c2) a+(v0) a-(v2) a-(v1) a-(c0)