1/2 a^{c2,v0}_{c0,c1} b^{c3,a0}_{a1,v0} c^{a2}_{c4} gamma1^{a1}_{a2} a+(c0) a+(c1) a+(c4) a-(a0) a-(c3) a-(c2)
+a^{c1,v0}_{c0,c3} b^{c3,a1}_{a0,v0} c^{a2}_{c2} a+(c0) a+(c2) a+(a0) a-(a2) a-(a1) a-(c1)
+a^{c1,v0}_{c0,c3} b^{c3,a0}_{a1,v0} c^{a2}_{c2} gamma1^{a1}_{a2} a+(c0) a+(c2) a-(a0) a-(c1)
-a^{c1,v0}_{c0,c3} b^{c3,a0}_{a1,v1} c^{a2}_{c2} gamma1^{a1}_{a2} a+(c0) a+(c2) a+(v1) a-(v0) a-(a0) a-(c1)