-1/2 a^{a0}_{c0} b^{c1,v0}_{a1,a2} c^{a3,v1}_{c2,c3} eta1^{a1}_{a0} gamma1^{a2}_{a3} a+(c0) a+(c2) a+(c3) a-(v1) a-(v0) a-(c1)
+1/4 a^{a0}_{c0} b^{c1,v0}_{a1,a2} c^{a3,v1}_{c2,c3} lambda2^{a1,a2}_{a0,a3} a+(c0) a+(c2) a+(c3) a-(v1) a-(v0) a-(c1)
-1/2 a^{a0}_{c2} b^{c2,v0}_{a1,a2} c^{a3,v1}_{c0,c1} eta1^{a1}_{a0} gamma1^{a2}_{a3} a+(c0) a+(c1) a-(v1) a-(v0)
+1/2 a^{a0}_{c2} b^{c2,v0}_{a1,a2} c^{a3,v1}_{c0,c1} gamma1^{a2}_{a3} a+(c0) a+(c1) a+(a1) a-(v1) a-(v0) a-(a0)
+1/4 a^{a0}_{c2} b^{c2,v0}_{a1,a2} c^{a3,v1}_{c0,c1} lambda2^{a1,a2}_{a0,a3} a+(c0) a+(c1) a-(v1) a-(v0)
+1/2 a^{a2}_{c2} b^{c2,v0}_{a0,a3} c^{a1,v1}_{c0,c1} eta1^{a3}_{a2} a+(c0) a+(c1) a+(a0) a-(v1) a-(v0) a-(a1)