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