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