-1/8 a^{v1,v2}_{c0,v0} b^{c2,c3}_{c1,a1} c^{a3,a4}_{a0,a2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(c1) a+(a0) a+(v0) a-(v2) a-(v1) a-(c3) a-(c2)
+1/4 a^{v1,v2}_{c2,v0} b^{c1,c2}_{c0,a1} c^{a3,a4}_{a0,a2} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(a0) a+(v0) a-(v2) a-(v1) a-(c1)
+1/4 a^{v1,v2}_{c2,v0} b^{c1,c2}_{c0,a3} c^{a2,a4}_{a0,a1} gamma1^{a3}_{a4} a+(c0) a+(a0) a+(a1) a+(v0) a-(v2) a-(v1) a-(a2) a-(c1)