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