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