a^{a0,a1}_{c0,v0} b^{c0}_{a2} c^{v1}_{a3} eta1^{a3}_{a1} eta1^{a2}_{a0} a+(v0) a-(v1)
+1/2 a^{a0,a1}_{c0,v0} b^{c0}_{a2} c^{v1}_{a3} lambda2^{a2,a3}_{a0,a1} a+(v0) a-(v1)
+a^{a0,a1}_{c0,v0} b^{c1}_{a2} c^{v1}_{a3} eta1^{a3}_{a1} eta1^{a2}_{a0} a+(c0) a+(v0) a-(v1) a-(c1)
+1/2 a^{a0,a1}_{c0,v0} b^{c1}_{a2} c^{v1}_{a3} lambda2^{a2,a3}_{a0,a1} a+(c0) a+(v0) a-(v1) a-(c1)
-a^{a0,a2}_{c0,v0} b^{c0}_{a1} c^{v1}_{a3} eta1^{a3}_{a2} a+(a1) a+(v0) a-(v1) a-(a0)
+a^{a0,a2}_{c0,v0} b^{c0}_{a3} c^{v1}_{a1} eta1^{a3}_{a2} a+(a1) a+(v0) a-(v1) a-(a0)