1/4 a^{c1,c2}_{c0,c7} b^{c4,c7}_{c3,a1} c^{a0,a2}_{c5,c6} gamma1^{a1}_{a2} a+(c0) a+(c3) a+(c5) a+(c6) a-(a0) a-(c4) a-(c2) a-(c1)
+1/16 a^{c0,c1}_{c5,c6} b^{c5,c6}_{c2,a0} c^{a1,a2}_{c3,c4} a+(c2) a+(c3) a+(c4) a+(a0) a-(a2) a-(a1) a-(c1) a-(c0)
+1/8 a^{c0,c1}_{c5,c6} b^{c5,c6}_{c2,a1} c^{a0,a2}_{c3,c4} gamma1^{a1}_{a2} a+(c2) a+(c3) a+(c4) a-(a0) a-(c1) a-(c0)