-1/2 a^{c1,v1}_{c0,v0} b^{c3,c4}_{c2,a0} c^{a1}_{v1} gamma1^{a0}_{a1} a+(c0) a+(c2) a+(v0) a-(c4) a-(c3) a-(c1)
+a^{c0,v1}_{c3,v0} b^{c2,c3}_{c1,a0} c^{a1}_{v1} a+(c1) a+(a0) a+(v0) a-(a1) a-(c2) a-(c0)
-a^{c0,v1}_{c3,v0} b^{c2,c3}_{c1,a0} c^{a1}_{v1} gamma1^{a0}_{a1} a+(c1) a+(v0) a-(c2) a-(c0)
+a^{c0,v1}_{c3,v0} b^{c2,c3}_{c1,a0} c^{a1}_{v2} gamma1^{a0}_{a1} a+(c1) a+(v0) a+(v2) a-(v1) a-(c2) a-(c0)