a^{a0}_{c0} b^{v0,v1}_{a1,a2} c^{a3}_{v1} eta1^{a1}_{a0} gamma1^{a2}_{a3} a+(c0) a-(v0)
+a^{a0}_{c0} b^{v0,v1}_{a1,a2} c^{a3}_{v1} gamma1^{a2}_{a3} a+(c0) a+(a1) a-(v0) a-(a0)
-1/2 a^{a0}_{c0} b^{v0,v1}_{a1,a2} c^{a3}_{v1} lambda2^{a1,a2}_{a0,a3} a+(c0) a-(v0)
-1/2 a^{a0}_{c0} b^{v0,v1}_{a1,a2} c^{a3}_{v2} eta1^{a1}_{a0} gamma1^{a2}_{a3} a+(c0) a+(v2) a-(v1) a-(v0)
+1/4 a^{a0}_{c0} b^{v0,v1}_{a1,a2} c^{a3}_{v2} lambda2^{a1,a2}_{a0,a3} a+(c0) a+(v2) a-(v1) a-(v0)
+a^{a2}_{c0} b^{v0,v1}_{a0,a3} c^{a1}_{v1} eta1^{a3}_{a2} a+(c0) a+(a0) a-(v0) a-(a1)