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