1/4 a^{v1}_{v0} b^{v3,v4}_{a1,v2} c^{a3,a4}_{a0,a2} lambda2^{a1,a2}_{a3,a4} a+(a0) a+(v0) a+(v2) a-(v4) a-(v3) a-(v1)
-1/4 a^{v3}_{v0} b^{v1,v2}_{a1,v3} c^{a3,a4}_{a0,a2} lambda2^{a1,a2}_{a3,a4} a+(a0) a+(v0) a-(v2) a-(v1)
-1/4 a^{v3}_{v0} b^{v1,v2}_{a3,v3} c^{a2,a4}_{a0,a1} gamma1^{a3}_{a4} a+(a0) a+(a1) a+(v0) a-(v2) a-(v1) a-(a2)