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