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