-1/2 a^{v0}_{a0} b^{c1,a2}_{c0,a1} c^{c2,c3}_{a3,v0} eta1^{a3}_{a2} a+(c0) a+(a0) a+(a1) a-(c3) a-(c2) a-(c1)
+a^{v0}_{a0} b^{c0,a2}_{c2,a1} c^{c1,c2}_{a3,v0} a+(a0) a+(a1) a+(a3) a-(a2) a-(c1) a-(c0)
-a^{v0}_{a0} b^{c0,a2}_{c2,a1} c^{c1,c2}_{a3,v0} eta1^{a3}_{a2} a+(a0) a+(a1) a-(c1) a-(c0)
+a^{v0}_{a0} b^{c0,a2}_{c2,a1} c^{c1,c2}_{a3,v1} eta1^{a3}_{a2} a+(a0) a+(a1) a+(v1) a-(v0) a-(c1) a-(c0)
+1/2 a^{v0}_{a2} b^{c1,a3}_{c0,a0} c^{c2,c3}_{a1,v0} gamma1^{a2}_{a3} a+(c0) a+(a0) a+(a1) a-(c3) a-(c2) a-(c1)
+a^{v0}_{a2} b^{c0,a3}_{c2,a0} c^{c1,c2}_{a1,v0} gamma1^{a2}_{a3} a+(a0) a+(a1) a-(c1) a-(c0)
-a^{v0}_{a2} b^{c0,a3}_{c2,a0} c^{c1,c2}_{a1,v1} gamma1^{a2}_{a3} a+(a0) a+(a1) a+(v1) a-(v0) a-(c1) a-(c0)