1/4 a^{c1,c2}_{c0,a1} b^{c4,c5}_{c3,c7} c^{c7,a2}_{c6,a0} gamma1^{a1}_{a2} a+(c0) a+(c3) a+(c6) a+(a0) a-(c5) a-(c4) a-(c2) a-(c1)
+1/2 a^{c0,c1}_{c5,a0} b^{c3,c5}_{c2,c6} c^{c6,a2}_{c4,a1} a+(c2) a+(c4) a+(a0) a+(a1) a-(a2) a-(c3) a-(c1) a-(c0)
-1/2 a^{c0,c1}_{c5,a1} b^{c3,c5}_{c2,c6} c^{c6,a2}_{c4,a0} gamma1^{a1}_{a2} a+(c2) a+(c4) a+(a0) a-(c3) a-(c1) a-(c0)
+1/8 a^{c0,c1}_{c7,a1} b^{c4,c5}_{c2,c3} c^{c7,a2}_{c6,a0} gamma1^{a1}_{a2} a+(c2) a+(c3) a+(c6) a+(a0) a-(c5) a-(c4) a-(c1) a-(c0)
-1/4 a^{c0,c1}_{c7,a1} b^{c4,c7}_{c2,c3} c^{c6,a2}_{c5,a0} gamma1^{a1}_{a2} a+(c2) a+(c3) a+(c5) a+(a0) a-(c6) a-(c4) a-(c1) a-(c0)