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