-1/2 a^{a1,a2}_{a0,a3} b^{c1,a4}_{c0,c3} c^{c3}_{c2} gamma1^{a3}_{a4} a+(c0) a+(c2) a+(a0) a-(a2) a-(a1) a-(c1)
-1/4 a^{a0,a3}_{a1,a2} b^{c2,a4}_{c0,c1} c^{c4}_{c3} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a+(c3) a-(a0) a-(c4) a-(c2)
-1/2 a^{a0,a3}_{a1,a2} b^{c1,a4}_{c0,c3} c^{c3}_{c2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c2) a-(a0) a-(c1)