1/8 a^{c0}_{a0} b^{a1,a2}_{c3,c4} c^{c3,c4}_{c1,c2} a+(c1) a+(c2) a+(a0) a-(a2) a-(a1) a-(c0)
-1/2 a^{c0}_{a1} b^{a0,a2}_{c1,c5} c^{c4,c5}_{c2,c3} gamma1^{a1}_{a2} a+(c1) a+(c2) a+(c3) a-(a0) a-(c4) a-(c0)
+1/4 a^{c0}_{a1} b^{a0,a2}_{c3,c4} c^{c3,c4}_{c1,c2} gamma1^{a1}_{a2} a+(c1) a+(c2) a-(a0) a-(c0)