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