-1/2 a^{c0,a1}_{a0,v0} b^{c3,v1}_{c1,c2} c^{a3,v2}_{c4,a2} eta1^{a2}_{a1} gamma1^{a0}_{a3} a+(c1) a+(c2) a+(c4) a+(v0) a-(v2) a-(v1) a-(c3) a-(c0)
-1/2 a^{c0,a1}_{a0,v0} b^{c3,v1}_{c1,c2} c^{a3,v2}_{c4,a2} lambda2^{a0,a2}_{a1,a3} a+(c1) a+(c2) a+(c4) a+(v0) a-(v2) a-(v1) a-(c3) a-(c0)