1/4 a^{a0,a1}_{c0,c1} b^{c3,v0}_{c2,a2} c^{a3}_{v0} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(c2) a-(a1) a-(a0) a-(c3)
+1/2 a^{a0,a2}_{c0,c1} b^{c3,v0}_{c2,a3} c^{a1}_{v0} eta1^{a3}_{a2} a+(c0) a+(c1) a+(c2) a-(a1) a-(a0) a-(c3)
-1/2 a^{a0,a1}_{c0,c2} b^{c2,v0}_{c1,a2} c^{a3}_{v0} a+(c0) a+(c1) a+(a2) a-(a3) a-(a1) a-(a0)
-1/2 a^{a0,a1}_{c0,c2} b^{c2,v0}_{c1,a2} c^{a3}_{v0} gamma1^{a2}_{a3} a+(c0) a+(c1) a-(a1) a-(a0)
+1/2 a^{a0,a1}_{c0,c2} b^{c2,v0}_{c1,a2} c^{a3}_{v1} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(v1) a-(v0) a-(a1) a-(a0)
-a^{a0,a2}_{c0,c2} b^{c2,v0}_{c1,a3} c^{a1}_{v0} eta1^{a3}_{a2} a+(c0) a+(c1) a-(a1) a-(a0)
+a^{a0,a2}_{c0,c2} b^{c2,v0}_{c1,a3} c^{a1}_{v1} eta1^{a3}_{a2} a+(c0) a+(c1) a+(v1) a-(v0) a-(a1) a-(a0)