-1/4 a^{c0,c1}_{v0,v1} b^{c3,a1}_{c2,a0} c^{a3,v2}_{c4,a2} eta1^{a2}_{a1} gamma1^{a0}_{a3} a+(c2) a+(c4) a+(v0) a+(v1) a-(v2) a-(c3) a-(c1) a-(c0)
-1/4 a^{c0,c1}_{v0,v1} b^{c3,a1}_{c2,a0} c^{a3,v2}_{c4,a2} lambda2^{a0,a2}_{a1,a3} a+(c2) a+(c4) a+(v0) a+(v1) a-(v2) a-(c3) a-(c1) a-(c0)