1/2 a^{v0,v1}_{a0,a1} b^{a2}_{c0} c^{a4}_{a3} eta1^{a3}_{a2} gamma1^{a1}_{a4} a+(c0) a+(a0) a-(v1) a-(v0)
+1/2 a^{v0,v1}_{a0,a1} b^{a2}_{c0} c^{a4}_{a3} lambda2^{a1,a3}_{a2,a4} a+(c0) a+(a0) a-(v1) a-(v0)
+1/2 a^{v0,v1}_{a1,a2} b^{a3}_{c0} c^{a4}_{a0} gamma1^{a2}_{a4} gamma1^{a1}_{a3} a+(c0) a+(a0) a-(v1) a-(v0)
+1/4 a^{v0,v1}_{a1,a2} b^{a3}_{c0} c^{a4}_{a0} lambda2^{a1,a2}_{a3,a4} a+(c0) a+(a0) a-(v1) a-(v0)