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