1/4 a^{c2,c3}_{c0,c1} b^{a0,a2}_{c4,a1} c^{a4}_{a3} eta1^{a3}_{a2} gamma1^{a1}_{a4} a+(c0) a+(c1) a+(c4) a-(a0) a-(c3) a-(c2)
+1/4 a^{c2,c3}_{c0,c1} b^{a0,a2}_{c4,a1} c^{a4}_{a3} lambda2^{a1,a3}_{a2,a4} a+(c0) a+(c1) a+(c4) a-(a0) a-(c3) a-(c2)
+1/8 a^{c2,c3}_{c0,c1} b^{a2,a3}_{c4,a1} c^{a0}_{a4} lambda2^{a1,a4}_{a2,a3} a+(c0) a+(c1) a+(c4) a-(a0) a-(c3) a-(c2)