-1/4 a^{a1}_{a0} b^{c0,a2}_{c3,c4} c^{c3,c4}_{c1,c2} a+(c1) a+(c2) a+(a0) a-(a2) a-(a1) a-(c0)
+1/2 a^{a0}_{a1} b^{c1,a2}_{c0,c5} c^{c4,c5}_{c2,c3} gamma1^{a1}_{a2} a+(c0) a+(c2) a+(c3) a-(a0) a-(c4) a-(c1)
-1/4 a^{a0}_{a1} b^{c0,a2}_{c3,c4} c^{c3,c4}_{c1,c2} gamma1^{a1}_{a2} a+(c1) a+(c2) a-(a0) a-(c0)