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