-1/4 a^{a0,a1}_{c3,v0} b^{c0}_{a2} c^{c3,a3}_{c1,c2} gamma1^{a2}_{a3} a+(c1) a+(c2) a+(v0) a-(a1) a-(a0) a-(c0)
+1/4 a^{a0,a1}_{c3,v0} b^{c3}_{a2} c^{c2,a3}_{c0,c1} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(v0) a-(a1) a-(a0) a-(c2)
-1/2 a^{a0,a2}_{c3,v0} b^{c0}_{a3} c^{c3,a1}_{c1,c2} eta1^{a3}_{a2} a+(c1) a+(c2) a+(v0) a-(a1) a-(a0) a-(c0)
+1/2 a^{a0,a2}_{c3,v0} b^{c3}_{a3} c^{c2,a1}_{c0,c1} eta1^{a3}_{a2} a+(c0) a+(c1) a+(v0) a-(a1) a-(a0) a-(c2)