1/8 a^{a1,a2}_{c0,a0} b^{c1,v1}_{a3,v0} c^{c4,c5}_{c2,c3} lambda2^{a0,a3}_{a1,a2} a+(c0) a+(c2) a+(c3) a+(v0) a-(v1) a-(c5) a-(c4) a-(c1)
-1/2 a^{a1,a2}_{c4,a0} b^{c0,v1}_{a3,v0} c^{c3,c4}_{c1,c2} eta1^{a3}_{a2} a+(c1) a+(c2) a+(a0) a+(v0) a-(v1) a-(a1) a-(c3) a-(c0)
+1/4 a^{a1,a2}_{c4,a0} b^{c0,v1}_{a3,v0} c^{c3,c4}_{c1,c2} lambda2^{a0,a3}_{a1,a2} a+(c1) a+(c2) a+(v0) a-(v1) a-(c3) a-(c0)
-1/4 a^{a1,a2}_{c4,a0} b^{c4,v1}_{a3,v0} c^{c2,c3}_{c0,c1} eta1^{a3}_{a2} a+(c0) a+(c1) a+(a0) a+(v0) a-(v1) a-(a1) a-(c3) a-(c2)
+1/8 a^{a1,a2}_{c4,a0} b^{c4,v1}_{a3,v0} c^{c2,c3}_{c0,c1} lambda2^{a0,a3}_{a1,a2} a+(c0) a+(c1) a+(v0) a-(v1) a-(c3) a-(c2)